So I nearly tried them all
I was on SC2.9.2 and my only main disappointment I had was a slow GPS fix (sometimes had to reboot) - so I thought I'd give this ED01 modem a whirl.
So, I did Adrynalyne's roll back, ODIN DL09, flash EA28, then flash ED01, (nanroid), ODIN CWR 2.5, then rooted, restored apps & app data using Titanium Pro, (nandroid) then flashed Adrynalyne's debloat/debing, (nandroid) - then flashed imnuts -50 kernel, voodoo, (nandroid.. paranoid yes), then flashed fasinatesense theme.
Everything seems to be working fine. I've noticed with imnuts kernel my battery is running about 8-10 deg c cooler, so with all I'm hoping for a better battery life as well.
Was it worth it? Time will tell.
I did do a rollback and tried the Community ROM first, but I just didn't quite like the theme (I know that could be changed) .. and there were some issues I was having. I figured I'd give it a while as those bugs are worked out... so I really did the rollback twice.
I'll come back in a few days and give an update on my battery.
Once again - thanks to all the Dev's and Community that helps us with playing with these toys. (we really need to get a life).