Browser = I use Dolphin HD, for the few times I browse, but I also have Opera Mini installed, too.
Dialler = exDialer
Music Player = andLess
Mail = Maildroid
SMS = stock, since I rarely SMS anymore, because it is a ripoff
I've installed Sony Style ROM, which is based on CM7. It's also Android 2.3. I didn't like the way CM7 looked. Using ADWLauncher.