I always thought profile would make the best cassette hubs, but I have had loads of grief with my profile ss one + profile in UK. They took about 6 weeks to fix it the first time it broke(after about 1 month riding it - mostly at the park and race track), then about 3 months to sort it the second time it went(about 2 months after it was fixed). The springs a paws looked like they had been crushed in a vice. Now i'm not a mad rider but I'm a fairly smooth rider so I was shocked it nacked up so easy. I hear the profile mini ones are OK, but I'm not such a fan of profile now.