MIUI ROMs or ports offer a different user experience than what you’d expect from a classic Android. At the beginning, it was a Chinese customized version of Android, borrowing stuff from several manufacturer customizations, but quickly became the preferred way to go for many Android power-users.
It you have a Samsung Galaxy S II Epic 4G Touch, Sprint’s Samsung Galaxy S II, and you’d like to try out a MIUI ROM, head over to the source link to check one out. You’ll find there an official MIUI release complete with download links and feedback if you are rooted and have an itchy finger looking to flash the phone. There are still some glitches listed, like the Portable Hotspot feature or the camera but you’ll find out more at XDA Developers.
Source: XDA Developers