From what i've been reading recently the new Samsungs are the schiznit. But... they're big $$ now. My LG 42" (42LB5D) is dope for what I do which is primarily movies and last price match on bestbuy.com was $996. Depends on what you want to spend. My dad has a 52" Sony XBR5 which is the hotness but honestly, unless i see 'em side by side I probably couldn't tell the difference between his $2500+ and mine. Some have built in speakers, others do not.
Don't even spend $10 on an HDMI cable. HDMI is HDMI. I got mine through buy.com or amazon.com. The cables were like $1.50 each for 6 footers plus like $5 shipping. It's digital so all the fandangle manufacturer promises are B.S. Read some threads... look up the AV Science forum (
http://www.avsforum.com/) there's a crapload of info there....
Also, if you have TimeWarner and get their HD Converter box (Scientific Atlanta HDC4250 iirc) beware cuz most of the time they do not work with HDMI. It's why Time Warner supplies it with a composite cable & an audio cable.
Get 1080p. Also, the setup can be a beeyatch. Getting the colors right, etc. Out of the box they're designed to look good on display in the store... super bright, etc. Look on the AV Science forum for whatever model # you get and someone will have posted optimal settings. You'll find yourself tinkering with it.
Lastly... put the beeyatch on the wall. Buy.com typically has wall mounts for like $20 after rebate. I put mine on the wall last week, drilled holes in teh wall to fish the cables thru and it's awesome. Very clean. Don't pay over $30 for a wall mount.
And if you want a blu-ray player...
http://www.sonystyle.com and click on their refurb outlet... $280 shipped for the BDP-S300 which will upconvert your crappy a$$ SD discs and do 1080p via HDMI or Composite.
Phew... that's a lot of info.