Will a LCD RP TV last 10 years without any picture degradation? Any longevity testing available? Contacted Sony, reply evaded answering if any long term testing done. Should I stick with a CRT? I prefer the light weight of a LCD but the TV I purchase will have to do for years. I can control lighting in my HT room but do not always want to watch TV in the dark. Should I consider DLP, has there been longevity testing?