There seem to be new leaked ROMs every couple of days at the moment, i think a lot of folks were using jg5. I'm on jm1 but apparently jm2 has flash support in the browser so i'm tempted to reflash just to check that out. Main gripe seems to be dodgy GPS support, not sure if this is with leaked ROMs or the offical ROM too
On another note JM2 is meant to be very good and seems to fix a lot of previous bugs