Power Conditioners for TVs--??

I guess 1st off; I live in an apt.--thus ded. line is out.---I think living in a large complex (94 units)--(3 meter rooms)has to add much crap to everybody's power.

Now, the tv is the 61' JVC d-ila.--A light engine/bulb similar to lcd/dlp--- There are sooo mannny conditioners ---and especialy new versions of older conditioners ------- Oh,ya.they all promise to take your tv to "tv-heaven".---I'm afraid part of the reason why the classifieds are full of used conditioners is they didn't do much for 'that' owner. I appreaciate all the input/suggestions I can get. Thanks in advance Geo.