I've tried and tested a number of different mag pins and these are the ones I keep coming back to when I need a new set. They're low profile, have a strong fit, and are aesthetically pleasing.

Across Performance, Value, and Build Quality, the Voltra Fixed Mounts deliver. I have several of these mounts set up around my gym where I'm frequently attaching the Voltra in specific positions on my uprights and crossmembers. These (and the adaptive rack mounts) are also the only mounts that work with my Stall Bar uprights where I only have access to the front and back holes, as the sides are occupied by horizontal bars. The only criticism I have of these mounts is that they occupy 5 x 1: holes with 1" spacing. In some cases this can limit access. Otherwise they fit tight to your uprights, are well built, and perform as intended.

At a glance, it's a brilliant design with everything you'd want in a split squat stand. It offers multiple height adjustments, stows away with a small footprint, and is made with quality steel from a reputable premium manufacturer. The only immediately noticeable downside was its price tag, but as a less price sensitive buyer I didn't mind paying for a piece that would drastically improve a frequently programmed movement like split squats... or so I thought. Unfortunately the Commander suffers from two major flaws. First, is its ease of setup. For any space saving, collapsible piece, you have to consider the time and effort required for setup. Because the Commander is so heavy due to its 3x3" tube HSS construction and multiple components, it's a pain to pull out for use. This issue is compounded when you need to detach and reattach the crossbar, swivel the stand, and remove/insert magpins while balancing the heavy unit. Once unfolded it's also difficult to move into the perfect position before you start performing Bulgarian Split Squats... but this isn't the worst part. The second, and most fatal flaw of this piece is the kickstand/leg design. Because the Commander has a T-shaped base when deployed, it easily tips under heavy load. The whole point of a Split Squat Stand is to provide real-leg stability during split squats so you can focus on generating force via your front leg. In order to counter the inevitable tilt, I will rotate the unit 180 degrees to align my back foot with the heavier/stable end of the stand. This improves the stability under load, but because of the heft of the unit, it is especially difficult to achieve consistent positioning from set to set when you are constantly rotating it into place. Some other critiques include the need to buy a separate pad and MagPins, but I didn't factor these into my rating.

The Prime Stability Pad is one of my most used rack attachments. As advertised, it improves stability on a variety of exercises, increasing control for rows, presses, flies, and a variety of other accessory movements. The stock design of this unit would be adequate for most users, but benefits from some small modifications. One is the guide/limiter pin. By removing this, you can store the unit vertically when mounted to a crossmember, as I've done. The second modification I made was swapping out the stock green pop pins for the JD Gym Equipped 'Green Delete' knurled pins. This is a strictly aesthetic modification, but is a huge visual improvement over the default green plastic pins. Modifications aside, there are some other qualities that leave much to be desired. The first is the tolerance on true 3x3" uprights or crossmembers. The unit tends to shift and move under significant load, which causes friction against the rack, undesired play during the movement, and creates an audible squeak with each rep. The second, and arguably worst quality is the pad. I'm not a fan of Prime's padding or slippery vinyl, but that's not my complaint. What really bothers me is the pad's back plate. It runs in a narrow strip down the middle of the pad, and will inevitably pull off the plywood backing, while straining the stitching - especially if load is unevenly distributed across the pad, which is inevitably the case with some movements. Storage is another shortfalls, as it's quite large, oddly shaped, and relatively heavy. Instead of storing the unit off of my rack, I've permanently mounted it to a retrofitted crossmember on my Stall bars. Overall, the product performs well, and I was very close to rating it 4 stars in the category. As much as I want to love the product, these small design deficiencies leave much to be desired. It's only a matter of time until a competitor develops a much better version of this product.

The Shogun Nord-Ex is positioned as a do-it-all posterior chain machine, combining variable angle Hyperextensions and Nordic Hamstring Curls in a compact and foldable form factor. Starting with the good, it allows you to perform these movements effectively, with easy adjustments and intuitive design. It specifically excels as a quality Nordic Hamstring Curl bench, with low tolerance pin adjustments and several angle adjustments to extend or reduce range of motion for different sized athletes. The performance falls off when performing hyperextensions. The main culprit is the narrow hip pad, which seems to be a design choice made to maintain the small footprint and ability to collapse into its stored state. During hyperextensions this results compression around the groin, which is especially uncomfortable for male athletes. In terms of build quality, the padding is a firm molded foam, with a quality vinyl exterior. While the thick steel throughout the frame and footplate are robust, the use of basic Q235 steel and 201 stainless in the adjustment tubes feels more like smart cost control, falling short of their commercial-grade claims. Overall, this is a thoughtfully designed and well executed product with some very noticeable flaws and overstated claims on construction and commercial grade build quality. It will be staying in my current gym space, but would be one of the first pieces to go if I had sufficient space for standalone hyperextension and Nordic hamstring curl units.

On its own, the Voltra I is an incredibly capable, versatile, and well-built piece of equipment that can be swapped in for any high-end cable machine or functional trainer. As a component of a more expansive collection of equipment, it is a force multiplier, adding novel forms of resistance to familiar exercises. I've been integrating the Voltra I into my daily training for nearly two year now, and it has been the single most transformative piece of equipment in my setup. I can use it as a rack-integrated cable machine, combine it with other pieces of equipment (like my VTS trolley system), or attach it to just about any anchor point using their AnyMount System. This has opened up a new dimension to my training, as I'm constantly testing new ways to apply its variable resistance in my programming.