If two units are the same price as one "bigger" unit, then I vote for 2. Try giving APC a call, they're pretty helpful.
And when the heck did you get a plasma anyways? Lemme guess, a Kuro. 151?
Shoud I get one that is rated at the Max watts listed on the TV or the max oppertion watts then it is calaibrated???
There is a big price diffrence when you get into the 800+ watts ones vs say 500wts, looking to also hook up my HD DVR (180wts) to it too. Or you think it would be cheaper to get 2 UPS, one 'small' one for the DVR (say 200wts) then a 'larger' one just for the TV.