Thinking about buying an HDTV

Mrs. KiloSeven has advised the 15 y.o. Samsung guest room TV Has To Go, due to the high-pitched audible from the flyback transformer.

So, I am starting to mull over the updated list of what Sears has (as they owe us a kilobuck for reasons too esoteric to mention here) and starting to read HDTV Buying Guides.

What buying guides have you found useful? Any thoughts on choices?