I can say that it worked great for us....but i dont know how many teams have used it this year with the new motors and all, but i have one word of warning...just make sure you keep your eyes on the welds and the little hex nuts or u could possibly strip it out...your robot however will still run but it wont drive/sound quite right
One thing I know that has worked very well for many teams is just the single motor mount designs, but those arent really helpful again this year with the new motors...