WoW you guys are mad, King hubs are bloody mint!! Me & mate both brought kings like 3 years ago now and not once have they skipped/broke etc Has been the best buy for are bikes! Other mate got a Pro2 at the same time and his has been mint too lol, as for Pro2 are better there not a hope hub has 42 points a King hub 72 you do the math . Really though its all down to you dude Pro2 hubs seem just as good for Trials half the bloody forum use them too .. i'd say Kings works smoother and sound alot better