Plasma televisions buzz
(this was a specific Samsung model AFAIK, if they do buzz it's certainly not something I can hear over anything when it's playing on the set), reflect a ton of light (
true, it is a glass screen not plastic. It is much more reflective), consume a lot of electricity
(relative... they do consume more than a LCD, but current plasma models are quite good. LCD's are better, but I would not label a current plasma as consuming "a lot"), generate a lot of heat
(I have not noticed significantly more than an LCD), and weigh more than LCD tvs
(true... they do because of the glass screen, but I wouldn't call them "heavy". My 55" Panny is a bit over 100lbs IIRC, still loads lighter than the 32" CRT it replaced
). They're only best viewed in darkened rooms
(yes/no, they are intolerant of sunlight, but you can certainly watch them with the lights on), and the advances they have in picture quality over a properly calibrated high quality LCD are only noticeable to videophiles
(proper video calibration costs a lot of money, Plasma looks good out of the box). Also, regardless of what anyone will have you believe, image retention and burn in are still issues you have to deal with with Plasma technology
(very true, I don't see how they will ever get rid of it with the type of tech that it is, plasma definitly needs to be babied compared to LCD).
Buy a Plasma if you're building a home theater somewhere in your house.
(I'd put it anywhere but a livingroom with big windows where the light is directly on the set.)
Buy an LED if you like brighter pictures, thinner profiles, lower operating costs, and if you don't want to think about image retention or burn in.
(All true, but only the last point is a serious factor for consideration IMO).