I'm guessing the Samsung LED Series... I dunno, I haven't seen any other brand selling LED TVs around my area aside from Samsung. What is the difference between LCD, LED, and OLED (aside from thickness) anyway?

Samsung LED is probably a good guess, but that about as qualified an answer I can give you

OLED is a new way of making screens that a thinner, use less power and provide much better picture (more colors, higher contrast). LED TVs a form of transition from LCD to OLED. They are better than LCD but not on par with OLED.

Are OLED Tvs out on the main market yet and how much they cost?

No they are not. Unless you count the two or three 11" screens that have been released and will cost you your soul.

I don't know if it's the best TV but I'm very content with the Sharp LCD with Full LED backlight (LE700) I recently bought.

http://sharpertechnology.co.uk/
http://www.sharp.co.uk/invt/icat/ledtelevisions

Advantages:
- cheaper than other LCDs with Full LED backlight (afaik)
- very low power consuming
- excellent picture and contrast with DVD/BluRay/PS3/even TV

Disadvantage:
- Horrible sound (but I heard that's a problem with many flatscreens)

meh, I assume most people with the money to buy the uber awesome TV's don't use the TV's sound. :-p

@twesterm: I'm an old-fashioned stereo hifi guy and actually planned to use the TV's sound, as I'd rather kill myself then buy a 5:1 soundsystem or whatever they're called, but the TV's sound was so horrible that I ended up buying a Denon soundbar (no one buys soundbars that's why I got one cheap). Problem solved.

BTW: As far as I know the Sharp LCDs with LED backlight are the cheapest at the moment with this technology (they use Full LED instead of Samsung's Edge LED or the expensive local dimming LED). Hm, I'm throwing terms around as if I knew anything about it...actually I don't...

...but anyway: Very low power consuming compared to "usual" LCD TVs, excellent picture/contrast and the suicide of my 11 year SDTV at the right time (i.e. close to PS3slim release) convinced me to buy one with this new LED techonology for 900 €.

Rainbird, that was hilarious!

Doesn't the Zune use an OLED? They're not that much more expensive than other touch-screen devices.

Yeah, but as far as I remember, those 11" screens were quite expensive. And they were both released before the Zune HD and were bigger.