"Plus, I buy a TV on the average of once every 10-12 years"
I bet that range drops dramatically when you finally get a flat screen. It's amazing how new sets endure compared to old crt's. My first plasma (a few years ago) was shot in less than a year. "Reverse Burn-In" is what they called it, for lack of a better term. Luckliy, since it technically wasn't burn-in, Samsung gave me my money back (burn-in is not covered by warranty). So, I figured I'd save some $ and buy a DLP (Samsung, since they were nice enough before)... well, after 2 years, it "broke". A loud pop, then the color got screwy, and now there's no pic. A serviceman is coming to look at it today (I think it's the color wheel). So, maybe I'll be looking for something else... LCD, I figure. Depends on the cost, and whether I think it's worth fixing (haven't even replaced the bulb yet).
Who ever needed to buy 3 crt's in less than 5 years? If you don't think you need to replace your Sony, I'd say "don't".