Hey Randy, didn't know about the change. Anyway, as mentioned, I started with some questionable bases, they worked .... fine. They were not quite satisfactory with a mouse-hack. The standard "yymv" applies here. As for current conditions, with the GGG upgrades and wired to a GGG encoder.....near perfection. Now, how about a u-trac? No idea. But I'll tell ya, if its significantly better than the heaven I'm in now....I'll pay anything. My guess, given the generalities in the way these are made, the u-trac is probably in the same ballpark. I realize I just have a love for trackballs...although a fickle one, as a poorly performing one would illicit much hate. I also have (not mounted or in use really) the 2.25' offering from Paradise. While a useable and affordable trackball, and not a target of hate, it's just not....heaven. To each their own and all that. I guess all of these threadsover 'what's better' never end with a conclusive answer.