You're posting your query in the DLP/LCD/D-ILA Projectors forum, so be prepared for a lot of responses like mine:
Get the projector. Projector! PROJECTOR PROJECTOR PROJECTOR!!
Seriously, though, you said that you were thinking about the future. I guarantee that once you've experienced a true home theater with a ten-foot wall-sized image, you will never want to look at a 32" picture tube again. When we have movie nights my house is ALWAYS
the destination because of the magnificent picture and sound my home theater offers. Size does
As for the size of your room, there are a lot of home theater owners in this forum who would love to have a 16' x 18' space with which to work. My home theater room is only 14' x 15', half the seating is less than ten feet from the 104" screen, and I find the sizing to be just right. Six to eight feet might be a bit
tight... think about ways to reconfigure your seating, if possible.
Finally, you mentioned mobility. You can't get much more mobile than a ten-pound projector! In fact, that's how I got into front projection technology in the first place--a quarter-ton RPTV simply wouldn't fit through the door to my attic home theater! And if (God forbid!) something were to go wrong with my projector, shipping it back to the factory is a simple matter. Try shipping several hundred pounds of TV when it comes time to move!
Another satisfied NEC VT540 ownerThe Scooterplex Cinema 1