Plasma TVs vs. LCD Projectors for Your Home Entertainment?

Kent Brewster asks: "We're working on making the presence of a TV set in our living room as unobtrusive as possible. The two main flat-or-invisible screen choices seem to be plasma and LCD projection. Gateway has a $3000 42-inch plasma screen, but I see ominous comments on Usenet about how that one's not really an HDTV and therefore to be avoided. Projector Xpress has a page of Sony projectors that are at or around that $3000 mark, and the street price for a home system that's HDTV-compatible seems to be working its way down to $1000. I would love to hear from anyone who's actually owned one of the Gateway models and might be willing to discuss pros and cons; same goes for anyone who's watching TV on a video projector. How's your bulb life, and what do they cost? Is the thing hot and noisy? Was it hard to set up? Have you integrated it with your home theater? Are you using a screen, or just shooting it onto the wall? If I do this, am I going to feel like an idiot a couple of years from now when LED bulbs replace everything?"