MBM135 Have you ever considered a projector?
Since you said you move often, it would be much easier to move than a bigscreen and you could easily change screen sizes depending on the size of your HT room.
And you would be amazed at the picture quality on even sub <1,000 projectors today.
I have a $2,500 53" 4:3 rp bigscreen with a great picture.
I also have an Infocus X1 projector I got for $850, plus about $350 for a mid-level 106" 16:9 screen that has a picture that equals or exceeds the rp bigscreen. It definitely looks better than any movie theater I've been in.
If you can demo a pj and need this for HT, I'd try it. I was amazed at how incredible the picture was. Combined with all my Klipsch speakers, it's a great setup for HT.
For a few more bucks you could probably get a better pj than I have and stay under your $2,000 budget.
Just an option that would be easier to take with you when you move compared to hauling a huge TV.