Re: HDMI 1.3a vs b
HDMI 1.3a or b is a little ahead of the game. You can buy a receiver that has a DolbyTrue HD decoder and HDMI 1.3 connections but there aren't any sources that pass the lossless audio formats undecoded. There are also not any players that can pass Deep Color. You could get deep color from a PC and/or maybe XBox or PS3 games, but Bluray and HD-DVD are encoded in 8-bit color. Maybe in a year or two we'll see sources but for now it's useless. HDMI 1.2a with LPCM is the highest technology you can take advantage of right now.