I've been using the 552s for about a month now and love them. I've looked at other adjustables in store and there is no comparison. At first I though it was a bit pricey but after using them a bit I feel the price point is perfect.
I bought these weights along with a bench and the stand as an alternative to purchasing sets of weights. The bench and the stand were easy to assemble, and the weights were already set to go. I highly recommend this product.
i got these because i dont have a lot of room to have a weight set in my apt, with the bench i can do a lot of what i do in the gym to keep my muscles in shape and firm.
I got the dumbbells because I have limited space in my workout room and am doing P90x. They are PERFECT. I read the reviews before I bought it and alot of people's biggest complaint was that it was sometimes hard to select the right weight. They seemed to have improved their design significantly and when you "select" or "rotate" to a weight it clicks over so that it is perfectly on each weight, no hassle, quick, and easy. I love them!
Pros: Amazing New Design, Compact, Easy To Use, Multifunctional, Very sturdy