ive had it since may and it still runs really fast and super smooth. the cups were more on the easy side to put in, but you have to be careful whihc method you use because if you just hit them in since theres a little lip at the top tthe lip will be pushed in preventing you from putting the bearings in, i recommend using a vice if you have on big enough. once installed it never wobbled or stalled and so far ive only had to regrease it once. all around i give it an 8/10 its a pretty good deal fro the price.