Newbie post re: HDTV etc

[forzaitalia]

Hi there..

I think I'm posting in the right section as my question relates to High Definition rather than the Bluray Newbies section on the Forum

I have a 37 inch LG LCD & PS3 (through which I play Bluray dvds through a HDMI cable)

Thinking of getting a new TV

A couple of question for you, any help is appreciated:

a) LCD, Plasma & 1080 HDTV are all separate makes of TVs?
b) Probably subject to personal opinion, but which is the better to buy?
c) The best makes out there?...Samsung / LG / Sony & Panasonic?
d) Whats the best way to go from a 37 inch, 50 inch and higher?

I also have seen a lot of posts about TV calibration to get the best possible HD viewing...when I loaded up my PS3 for the first time, it basically went through this...ie which setting do you want? maximum 1080 etc..obviously i chose the 1080

The picture is amazing, I'm doubting that I have to do anything further to the TV to get more HD quality out??!!

Thanks for looking & any help is appreciated
Daniel