I have seen many people sing the praises of a professional calibration on here, so I know it's a Good Thing (TM). However, I'm wondering about doing it from a price/performance perspective. As I posted yesterday, I'm considering getting a Sony XBR Wega 36" or 40" TV sometime "soon". For a brand new set, am I going to notice a drastic enough difference in the picture quality that I should definitely spend the money to have it professionally calibrated? If it will help "a little bit" it's not worth it to me, I'm not a video quality FANATIC. I just want the best picture possible for an economical price. If I were to get a new set calibrated, how long after buying it should I wait? Isn't there a "burn-in" period during which it's a little bit pointless to calibrate, since things will drift (or something, pardon my lack of knowledge)? Also, does calibration prolong the TV's life at all? Also, how good of a job can one do using AVIA for a DIY calibration? I have no idea how much tha AVIA disc costs (I assume normal DVD price?) but if I can do, say, 50% as good a job as a professional using this disc, it seems like the cost savings would be worth it. But maybe you have to know a bit more than I do to do this... what is the AVIA disc, just test patterns? Or does it guide you in calibrating your set, too? Thoughts?