hey, the choice isnt that much fun to make but here are some advantages and disadvantages of both, hope it helps
LCD Pros and Cons
LCDs are available in smaller sizes, allowing them to go where a 37-inch plasma will not fit. They also provide incredibly bright images when viewed on center. If you plan on watching your TV in a room with a lot of light, LCD has the edge over plasma, both with its bright picture and its special surface coatings that reduce room reflections.
LCDs generally have slower video response times than plasmas, which is noticeable primarily on sports and fast action scenes. They also have a narrower viewing angle, meaning that as you move off center, the image contrast and brightness drop off. Most LCD panels (as well as plasmas) are factory preset to stand out in the very bright lighting at most stores. When you get them home and out of the box, however, they are way too intense. You should change the menu setting from factory preset (usually Vivid) to Movie, Cinema or Standard (depending on your set) and lower the contrast (also called Picture Control) to the halfway point for the best picture.
If your television is going to be in room with normal lighting, plasma will provide superb image quality, dark blacks and bright whites over the widest viewing angle. However, if you need a screen below 37 inches, LCD is really the only choice available. Enclosed patios, really bright rooms with skylights or untreated windows, and sunny kitchens are all excellent spots for LCD displays of all sizes.
Plasma Pros and Cons
Plasmas have wide viewing angles, meaning you can sit off-center and still see a very good picture. They have high contrast ratios, excellent color, deep blacks, fast response times for viewing scenes with a lot of motion such as sports, and generally lower prices than LCDs above 42 inches. Today’s plasmas have a long life expectancy. Many of the top tier brands are now rated at 60,000 hours, which is equal to over 16 years of use when operating the set 10 hours a day, every day.
Plasma disadvantages are few. In the early days, the most common criticism was that they suffered from “burn-in,” meaning that when a static image such as a video game logo is on the screen for too long, its shadow may linger even after it’s gone. Burn-in really is the uneven wear of the phosphors within the plasma panel. The risk of burn in has been greatly reduced by the set makers and can be minimized with a simple precaution. Like with LCD, upon unpacking and connecting the set, change the “picture mode setting” from factory preset (usually Vivid) to Movie, Cinema or Standard (depending on the TV) and lower the contrast (also called the “picture control”) to about one half level for the best picture.
Generally Speaking Plasmas tend to burn in if left on for to long on the same channel, i.e sports the channel logo will burn in
and LCD's have a tendancy of Ghosting, which is basiclly caused by slower response times on the LCD itself.
Personally id get the LCD but thats a personal preference from the fact i used to work at a place which sold both, i found LCD to suit me best when i was bludging around the store and not making any sales

hehhehe
Some other links you might wana have a look at are:
Cnet Australia:
http://www.cnet.com.au/tvs/0,239035250,240036500,00.htm
Flat TV People
http://www.flattvpeople.com/tutorials/lcd-vs-plasma.asp
Hope it all goes well for you,
