Bought these as a replacement for my old bowflex DBs. Love them.
The build quality is really good. I have never dropped them, but fully believe they could handle a drop without breaking, the handle knurling is reasonably sticky, more so than cheaper pairs of DBs.
I really like that these feel like real DBs (no giant mechanism poking out the side at small weights, for example), but the downside of the mechanism is that it is easy to seat them in the cradle with a gap and have to pick up and reseat. Not a huge problem, just a little annoyance, but the upside is that this mechanism makes these about the same size as fixed DBs once in use, there's little to them except metal plates.
I got these as the 70s and later upgraded to the 100s. The upgrade process was smooth and fast.
The one downside is that the weight jump is 10 lbs, and at a $850+tax price point currently, adding another $100+tax for the 2.5 lbs plates takes this out of the great value category.
Performance
Value
Build Quality