i think its easier just to test all the rom's your interested in and decided for your self, as everyone is different... (just nandroid backup first)
but i would expect cm9 to work better, since infusion is based on huawei's broken rom...
plus CM9 is 4.0.4 and has a big advantage with the theme chooser (something i would love to see built into android as standard)
The main ones I'm undecided with are CM9 and Infusion, and I've tried both. Although I only tried CM9 for a day, since I then flashed Infusion B04 (wanted to try it out). Since I can't make up my mind, decided to ask for opinions.
Oh, and with Kernels... Which one's the best? The one that comes with CM9, Geno.Kolar's or Omegamoon's? Or what advantages do they bring?