From what I can gather, the MIUI SGS2 port isn't officially supported by MIUI, and has a few bugs and issues. Do you think it's good enough to use on a day-to-day basis?
There are some bugs, and with the beta I had two months ago I ended up in a state where the phone wouldn't boot anymore. Afterwards I flashed it again and didn't have any problems since. Haven't updated to the latest version though. Everything I need works (so basically all the features of the phone).