The only ball I don't like is the measels cue ball. I'll use and get used to it if I have to, but I find it distracting. Seems there is a welcome trend going back to the traditional cue ball.
My biggest problem is that I'm almost completely color blind. The 2 & 4: 3,6,&7: 10 & 12: 11,14, & 15: all look identical and if I'm not reading numbers before I shoot I get in a bit of pickle. (or lose the table )