Pretty solid product, but inferior to the Torque Tank. However, the price difference makes this sled a tremendous value. I've loaded over 1000lbs of weight on this sled and it held up without issue. I do wish the resistance curve was steeper. Even maxed out, it's still not stiff enough (even with 1k pounds on it). The handles also have a tendency to loosen up over time, but not to the point of it being dangerous. The worst thing about this design (which goes for ALL sleds of this style) is the inability to maneuver it left/right once it's loaded down with weight.