Powerblock Personal \/ plus pro : solid , well construct , quick weight change design . selector pin never loosen or require mid work out tighten like other adjustable . although plate shift slightly when in motion I have never worry about the system fail . 10 year warranty , make in the USA . truly portable with no need for a cradle or stand . despite other user complaint the personal plus handle upgrade work fine for I . the weld plate be so thin you would have to have monster hand for this to be a issue . if you have ever look at these on auction site or classified , they really hold they value . con : plate do make a clanging noise when in motion . change plate when you be really fatigue can be a challenge if you do not get the selector pin exactly straight . do not expect a fancy work out dvd or exercise chart , you just get a black and white instruction manual . I suggest the laminated poster . put you hand into a rectangular box do take some get use to .