I do not compete, yet. I have been doing the long cycle clean and jerk (LCCJ). Right now, I am sticking with 2 16kg bells. When I can meet rank 2 for my weight (85kg), which is about 65 total in 10min, I planned to buy 20kg bells. When I can meet rank with 20kg bells, I will buy 24kg, etc. I do not see the need to run out and buy sets of every weight at this point.
Dicks Sports now sells Rage Fitness competition bells. I actually just bought a pair of 20kg bells last week with those 15% off coupons Dicks has in the paper. I like these better than my 16kg Perform Better kettlebells. The prices are good, especially with the 15% off, plus no shipping and Iwas able to feel the bells before buying them.