OTA GB rom or other GB rom?

[galaxy01]

are there difference in performance between OTA GB ROM and other custom GB ROM?

 

[PvilleComp]

For me, I've been a big fan of Cyanogenmod 7. It's been my daily driver for almost a year. Very fast, very stable, great battery life.

Make a nandroid of your current setup and give it a shot. You can always restore back.

You might also like some of the other GB ROM's out there too. I know Nills' is a favorite and I enjoyed it very much when I tried it.