Ok I have been there and it is confusing ,frustrating , and yes a little scary. When trying to buy the newer tvs out there. We see them come in all the time and here is what we have learned.
Pros: For picture quality and price Plasma televisions The contrast and blacks are very rich.
Cons:power consumption is an issue as opposed to the very efficient lcd,led
LCD (liquid crystal diode)
Pros: All around our favorite low power consumption proven technology reliable
Cons: A little pricey , not as crisp as a plasma
LED (light emitting diode) These are conventional lcd tvs with led back lit screens rather than the florescent back lit lcds.
Pros: A crisp picture and even better power consumption rating
We also recommend forgoing the smart tv option because chances are your bluray,or gaming system has that feature already and you can save a buck.