I have have these for about a month now and they be a great space saver in addition to be a very sturdy product . major use : I get they to use with Chalean Extreme from Beachbody and it work really well as the program go from one exercise to the next - it be a very quick change and I have no trouble get use to they . Range : I have always be physically active and I find this range of weight be fine for I as I do not anticipate ever go higher than 25 pound for upper body . my lower body can handle a little higher technically but I do not feel the need to get the higher range of this product . I prefer have the 2.5-3 pound increment as I find that there be a big difference with what I can lift when do a bicep curl versus a shoulder press for example . . if you be try to decide between these and the 5-45 pound , what make my decision be that 90 % of the exercise I do will be adequately supplement by up to 25 pound . for those few exercise where I want heavier I could always just get a adjustable pair with a couple of plate that go between 25-40 and that would be fine . but for right now I be get a perfectly good workout with this range . grip : love it . it be hard for someone like I with small hand to find dumbbell with a good grip . noise : someone say something about a clank sound , there be a minor amount of that but nothing I would have notice if I have not be look for it . I have use the spin lock adjustable dumbbell for year and those make noise too as you go up in weight ... I think that be just the nature of add on plate . I really have find no flaw in these . if you be use carpet I would recommend get the tray ... I be use hardwood floor so they be fine as be for I . I usually just put they up on my table when I be work out so I do not have to bend down so much .