I'm not a lawyer, but I have to use the lawyer's response, "It depends."
So far I have not owned any TV and have not known any one to own a TV more than 10 years even though those units are in working condition. Because technology improves and changes rapidly, old TVs are ill in comparision. That's a fact. To exacerbate the matter, natural age diminishes the quality of the picture. Even my poor visions could tell the difference in image quality between a 25" console and a HDTV unit. Moreover, it is human nature to relentlessly pursue for something better. The adage states," The grass is greener on the other side... And we gotta keep up w/ the Jones." Most of us probably upgraded to a 50" projector TV that comes w/ a universal remote control when the old 25" console that came with the old clicker were still working. It's tough to own a 25" console when TV commercials, Sunday ads, and electronic stores display nothing but big screens. Furthermore, it's even tougher to go into electronic stores to purchase a new universal remote control to replace an old clicker yet to resist the temptation of big screen as one would see consumers taking turns to park their trucks in front of the store to load their new-purchased big screens. As a consumer, the purchase power often increases over time while the price of technology from yesterday drops at the speed of gravity. Given the inverse relationship, it is very tough to resist the big screen TVs, which the Jones already own 4 units in their house.
Therefore, it depends on the personal preference. DLP may be the way to go for some. For others, 10 years can be a long time for those who are labeled as "early adaptor." Redwoodgarden is right on the fact that the "early adaptors" will have to pay their price, and I mean the world PRICE as in ka-ching!
I think that the person, who started this thread, is ready for a new THX A/V Receiver w/ DVI ports for some digital signals feeding into his EDTV plasma panel as he is tired of the old stereo receiver and the 25" TV console. I wonder what the HT in front of the name Steve stands for?