I've been runnin' EE03 as my daily since it was first leaked, and I can confirm just about every problem people have reported from inconsistent charging behavior, wild swings in battery life (day-to-day and even hour-to-hour), laggy performance, 3G connectivity problems, radio being disabled (permanent "airplane mode"), etc.
Most things I've been able to overcome by rebooting into CWM recovery, wiping the caches, and then rebooting. But some things eventually come back like the laggy performance.
So why would I keep this as a daily driver ... because GB fixed my MS Exchange sync non-functionality that occurred when I upgraded to Froyo. I have no idea Froyo torched my Exchange sync, but I tried everything in 2.2 to fix MS Exchange/Outlook, even Odin'ing back to previous builds/versions, and nothing worked (drove me to almost dump the phone). Once I flashed EE03, however, everything has worked on the MS Exchange sync seemlessly.
So I'm putting up with all kinds of bugs in EE03 because I need Exchange functioning,