I have a WD-65732 purchased in 2006. I've replaced one bulb, and it still has an excellent picture.
I do have one glitch that is annoying. When I first power on, the TV will come on switched to the RF1 Cable input despite that not being selected, or even connected. Or... sometimes it stays on HDMI-1 which is my Cable Box, but the TV will come up to a menu that says the TV guide is not set up. You have to hit EXIT in order to get off that screen, and my Xfinity remote does not have an EXIT function, nor is it able to change inputs.
If anyone has a solve for that, I'd like to try it.