I have 3 sets of balls, 1 set is the cheap ball set that comes with the Valley table I have, the only league in my town plays on these tables so I use them during league, my 2nd set is a Dynaspheres Tungsten set, they were stupid cheap because I guess some people didn't like the color of this ball set, they are bigger, but have a similar weight to the Valley table set, my 3rd set of balls are an Arimith Super Pro Cup set, I haven't been using them much because my table is an old coin operated table and I didn't want to beat up a nice set of balls on my cheap table, after owning these balls for more than a year I decided that I might as well use them, these balls play WAY different, they are much heavier and bigger than the other ball sets I own, I've played them for a couple of hours now, I find mistakes in stroke or aim are magnified using this ball set, not a bad thing, just an observation, anyone else have this same experience?