im finding 4.2.15.1 much faster than the previous release.
For Khaaan etc who are considering leaving cyanogen for an alternative rom DO NOT BOTHER.
Khaaan, I have tried all of the sense based roms out there, with swap, ram hack and enhanced dalvik etc and they are all extremely slow. I'm not sure where you read they were smooth but it must have been based on a 32A device. Evilhero 3 is no exception and will leave you waiting for the home app to load every time regardless of any tweaks you try.
Some of you may be getting the urge to try one of the 2 eclair based roms with 2.1 and live wallpapers. Again, don't bother. They have many bugs and are broken, missing even basic functionality. Also, the live wallpapers are a huge fail. They don't run well on a 32b device at all.
Cyanogen is where it's at for a 32B. Who cares if it takes him ages to release an update, it was worth the wait, it's just amazing now. If you do get bored between updates why not try messing about with metamorph theming? If you don't fancy that much try a standard theme.zip for cyanogen such as enoch. You just apply it from recovery and voila!
Safe.