to be honest i don't see a lot of roms on XDA either, its just a newer phone and takes time.
(still waiting on my s3 as well!<3 )
But i came from a evo3d gsm, and it still isn't doing the greatest. I imagine the more the models the more time it takes.
I pretty much lingered with my 3vo, i hope to get active and start helping out with my S3 =)