Thank you all for your insight and counsel. She wound up at Circuit City buying a 58-inch Panasonic plasma with no extra speakers and the basic Direct-TV hookup. With all that expense, it was still tough persuading her to include the quality cables she needed for optimum picture.
It's a well-deserved reward for her hard-working STILL-working husband on his 80th birthday in February.
As an aside, and reacting to various electronics buying articles, obtaining a TV is almost like buying a car with all the various spiffs touted. I reluctantly go along with high quality cables but don't bite on pinstripes or undercoating.
My personal favorite on the quick quest was a much less pricey 58-inch Samsung 1080 DLP rear projection at Best Buy. But I think she made a fine choice for her husband's needs, which included wall mounting. Good news is, like motor vehicles, there are many fine systems out there.