I'm looking into buying a widescreen HDTV (my first), and I've narrowed down the decision to two Panasonic models: the CT-34WX53 (34" tube) and the PT-47WX53 (47" RPTV). I can get good deals on both, though the latter would be a couple hundred dollars cheaper. Since I'm used to looking at a tube TV (I currently have a 27" Wega), is it going to be hard for me to get used to the image on an RPTV? I'm leaning towards the PT-47WX53, mainly because it's bigger and cheaper than the CT-34WX53, but I do like the sharpness of the picture on my tube and when I've looked at TVs in showrooms (I know, not the ideal environment to judge) the tubes always tend to look better. One more thing: because my living room isn't huge, I'll only be sitting about 7 feet away from the set. Is that too close for a 47-incher? Should I shoot for something smaller?