i got two sets of them. one is the traditional colors which i like best as im old fashioned. and one of the tournament colors which i dont use as they are ugly.
they dont need washing very often. and shoot better as you break them in a little.
make sure you get the cueball with only one big red spot on it. thats the good one. the one with the eye or whatever that is on it is okay i use one occasionally but they had problems with it but may be fine now.
i find that if i shoot with different sets of balls and different sticks regularly then i am always in stroke as my mind wont let conditions change things that are ingrained.