I use my Bowflex Selecttech 552 weights during my P90X workouts. They are great and extremely versatile when switching weights for each set. Buying the needed single weights and rack would cost twice as much, and they aren't as easy to stow away! The rollers that come with the stand are a great idea!
I use this set with P90x. It allows me to quickly switch weights without taking a long break. It saves a lot of room and very easy to use. Expensive, but I think I am getting my money worth.
Pros: Easy To Use, Multifunctional, Targets Muscles
great set of dumbells, contains all the dumbells i will ever need. included DVD with great tips, i am using lighter weights and getting a better workout, minimizing the risk of injury and being better able to isolate the specific muscle group i am working.
Pros: Durable, Easy To Use, Multifunctional, Targets Muscles
I've had these dumbells for a couple months now. They seem pretty solid, but time will tell whether they really are. My only critical observation is that they are quite a bit larger than standard dumbells, particularly compared to the lower weights, so it took a little while to get used to them.
I donated my old weights when I got these. They are all I needed. I can do just about every exercise with these I need and I got my most gains using them. I recommend them to everyone who asks me "how do I get muscles like that".
Pros: Compact, Durable, Easy To Use, Great grip, Great range of weights, Multifunctional, Super value per pound, Targets Muscles
I have been using this for P90x training. They have performed excellently. The quick change ability really keeps my workout area clean and clutter free. However, the first set I had fell off the rack and broke one of the weight holders. That was my fault, but it has reminded me not to carelessly drop the weights when I'm at the end of a strenuous set. I did say they were a bit big and for some exercises they are. They definitely don't prevent you from doing the exercises you just need to be comfortable with them so you don't whack yourself in the head :)
Product is exceptionally easy to use and most importantly -"Comfortable to hold on to". Also the phrase "User Friendly" (which is not a term associated with fitness equipment) is an overriding attribute to this product.
I'm doing my second round of p90x and these have made my second attempt infinitely more beneficial. The weights are great, easy to use, and let me shift easily between exercises. I HIGHLY recommend these...
Pros: Compact, Durable, Easy To Use, Multifunctional