Just a wee update:

So ICS is running like a dream on the SGII; it's hard to believe that this is an "experimental" ROM. With these sorts of ROMs you should expect some random reboots but for me, nothing. Not that I'm complaining - it just demonstrates how capable our good friends at XDA really are. I won't be running a Samsung ROM anytime soon, but they really do have their work cut out coming up with a ROM that will outshine CM9.