I have been "playing" for way too many hours the past couple weeks with ROMS on my Prevail. Here is some feedback on this ROM in support of the community here.
This ROM has one of the most detailed Settings menus. I don't know if that is from the kernel or the ROM, but it really provides options that I didn't find in CTMod or CM7.
There are TONS of themes that show up in the theme browser. This ROM has far more theme options than any of the others on the All Things Root page. Watch out, though, because there are apparently different size graphics in that listing. I loaded one theme and I couldn't get to the unlock button, it was off the screen (probably because of the scale). I had to re-flash the ROM to get past it.
A couple times untranslated screens appeared (proceed at your own risk!). This was unnerving because there is no way to predict what the buttons will do. Only option is to back out.
The screen with all the toggles on it (a very nifty feature!) appears to offer the option to arrange the order of the icons by dragging them up and down on the screen. But I couldn't find the way to save the order. That wasn't a big deal (none of the other ROMs I tried had that feature) but I note it here for reference.
The show-stopper for me with this ROM, the thing that prompted me to end my evaluation, was the glitch with the keyboard selection menu. I couldn't get it to switch keyboards! Since that is one of the main points of interface on the phone, I was not willing to change from my TouchPal keyboard.
Benchmarks:
Quadrant
MIUI with Kato kernel at 800 mHz (stock speed)
1441, 1544, 1486, 1493 on a Class 2 SD card
Same thing at 946mHz
1618, 1731, 1744, 1801
Antutu
at 800mHz
3605, 3530, 3620
at 946mHz
3984, 3918, 3590
I also ran tests with a Class 10 SD card. The differences were most noticeable in the Write and Read numbers
Class 2 Write: 14, 16, 14 Read: 101, 59, 88
Class 10 Write: 76, 62, 64 Read: 187, 188, 169