We have a big-screen digital HD tv downstairs, & a smaller (34") flat-screen digital tv upstairs. We get satellite tv to both sets, but only have the HD box downstairs. Frankly, I enjoy my little upstairs flat screen just as much, if not more, than the behemoth downstairs. Picture is nice & sharp, sound is terrific - I frankly don't need anything more. But then I'm not as much of an audio/video-phile as my husband, who has enough audio & video equipment to fully equip a small country. Not to mention we own - literally - several thousand CD's & well over a thousand DVD's now.
I say, if you like the picture & the sound, & the equipment is up to current & near future standards of the broadcasting that you want, that's all you need.