[quote name='doubledown']Also make sure the plasma is NOT EDTV....that is just junk. They are like $2000 cheaper, but not TRUE HDTV.
He is probably going to spend over $4000 easy for a decent Plasma.
You can get a 70" LCD from Sony for almost the same price....I would go BIGGER if that was the case

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EDTV is not junk, imo. OP, tell your friend to check out avsforum.com. It's a very informative forum for anything to do with home audio-video stuff.
EDTV is a lot cheaper, and depending on the main uses for your tv, it might even be better. EDTV handles native resolutions of dvds at least as well as, if not better, than HDTV. Also, normal tv signals (non- HDTV feeds) look significantly better on EDTV than HDTV. In addition, if you sit farther than about 6 feet from your television for a 42" set, most people won't be able to see a noticeable difference between EDTV and HDTV even using HDTV signals.
I've been shopping for a Plasma also, and the discussion at avsforum is definitely nudging me towards Panasonics. You can buy a 42" Panasonic EDTV display only (no tuners or speakers) for just over $2000 shipped, a 42" Panasonic EDTV with tuners and speakers for just under $3000. The HDTV versions are about $1000 extra.
I don't even think they make 70" flat panel LCDs, let alone flat-panel LCDs for $4-5000. You're probably thinking of LCD projection TVs, which have the disadvantages of being projection TVs.