CM9 based MIUI? That doesn't exist. We use the Evo 3D Sense based one, since it's directly provided from MIUI. Only problem? It was for the GSM version, so 4G doesn't work.
There is a CM10 based MIUI with everything minus 3D working (including 4G!) I believe.
Here it is!
Generally with this phone, Sense 3.6 ROMs work perfectly, Sense 4 ROMs have broken 3D and 4G, and AOSP based ROMs have 3D broken. Whichever one you choose depends on whether you really value those two haha.