I have had my 8-balls for about 5 months and I can definitely say that my china bones are faster than these by a little, but there may not be a bearing on the PLANET that is a smoother roll. It honestly seems like the extra ball requires slightly more effort to push them, but there is absolutely no vibration when they spin, which is important with dancing and jam skating. WORTH EVERY PENNY!!!

WOW, after they are broke in watch out, these things roll faster than anything I expected. Worth every cent and will buy more for sure.

At First They Felt Kinda Rough. Once I Started Skating On Them More I Broke them In. Now When I Corner I Feel The Support From The Extra Bearing. Its Nice To Know I Can Turn Harder As I Roll Faster. Give Them a Real 2 to 3 week break in period and you'll Be Satisfied

At first I wasn't very satisfied with these bearings. I got them to replace my usual Bones Reds. They seemed sluggish and I felt slowed down. After about two weeks, however, they seemed to loosen up and break in a bit and now they roll just fine and I feel like I'm back at my normal speed. I'm not sure what the deal was with that. So yeah... after the initial break-in period I'm happy with them. Plus, I just like the black bearings. The dust shields seem to be good quality. Not bad for the price. Take that for what it's worth.

these bearings are really good. i got them to use while i dont mess us my ceramics.. all in all these are really good for hitting the corners or jammin.