I picked up a Z4 maybe 6 months ago after the prices had dropped -- the value for dollar was just too good to pass up. I have been very happy with it.
The final decision was between the Z4 and the corresponding Panasonic -- AU900 I guess -- with the final decision being made by local availability and pricing. I probably would have also been very happy with the Panny but on balance I think the "sharp Sanyo" is closer to my viewing tastes than the "smooth Panasonic".
If you have some wall space and the ability to control ambient light then a projector seems like the obvious way to go. As others have said, getting a projector to a service depot is much easier than moving an RPTV, and there is really nothing more to go wrong in a projector than in an RPTV.
Someone made a comment about Axioms never being criticized in the media. Not sure that is true -- I distinctly remember someone complaining about blood pouring out of their ears after the first listening session
