I've been using PowerBlock dumbbells for my home gym for the past few months, and I couldn't be happier with them. I'm a serious lifter, and I need a set of dumbbells that can withstand heavy use. PowerBlocks have exceeded my expectations in terms of durability and performance. The dumbbells are also very well-balanced, and the handles are comfortable to grip. The best thing for me about them is that I don't have to bring my dumbbells to rack in order to adjust. If I know the maximum weight I will hit for an exercise (50lbs for example), I can unrack only the stack that goes up to 50lbs and leave the rest on rack. I can then conveniently change weights at my exercise spot without having to carry the entire stack. Just love them.