Some people think the other one is too twitchy to handle. Many people think ADS delay is a problem. This solves both. A more traditional setup. Because of the speed ramp-up isn't crazy you can get away without using different primary & secondary sensitivities & avoid the entire ADS delay issue outright.
1.33 YX (or whatever you like, but i advise keeping it lower than normal starting out.)
whatever sensitivity you like, the faster the better. you oughta push it until it's so fast you can't control it. then dial it back until you can. THEN revisit it after a few hours of play time and attempt to push it more. you bought an XIM, abuse it.
fwiw i still like the super faster one better, but 2EHO