I be ready to buy this set of classic powerblock on Amazon but then I find out that there be a newer version available for less at local retailer . the PowerBlock Sport 5.0 set -lrb- $ 299 -rrb- be essentially the same as the Class PowerBlock set but with a few improvement -lrb- extra 5lb of weight , better grip , sturdier lock , etc. -rrb- . here be the description from the official Powerblock website : `` the Sport Series be the third generation of PowerBlocks new in June of 2008 . the Sport Series consist of 4 model of PowerBlocks with unique difference in both form & function . as far as form go , the dramatic change would be the Gray color of the steel weight plate vs. the black weight plate of other PowerBlock model and the round shaped top of the weight plate offer a stylish look . as far as function difference , the Sport Series have taper handle , double tethered selector pin -lrb- not on the Sport 2.4 -rrb- , the wrist support be of a more open design offer a larger handle cavity and the dial lock be recess into the handle . '' with that out of the way , I 'll give a quick review . I just finish my first round of p90x classic use a combination of resistance band and light hexagon dumbbell -lrb- 10lb pair and 15lb pair -rrb- . I try hard to like the band but get tire of constantly change they for more resistance and the buckle end of get in the way too often . I then switch to dumbbell but those be too light for what I need so I end up tone instead of add muscle mass . I decide to go with the PowerBlocks and could not be happier with the decision . I try they out in the store first and right away I know it be a worthwhile purchase . they be well-built , relatively small for have such a blocky design , have a easy-to-use yet reliable lock mechanism , and feel great to handle . I have use they for a variety of p90x video and have not have any issue . the only very minor annoyance be that the plate clank a bit but I get use to it quickly and it be not a issue . other than that , I love everything about they and I be look forward to start round 2 of p90x with they soon !