There are DLP sets capable of 1080p native resolution now, just as with other technologies.
With projection vs. LCD/plasma, it's basically a question of screen size. There are larger and larger LCD and Plasma flat panel sets available these days, so it's not a simple matter of getting a big screen with RP or FP. The LCD and Plasma techs are now typically available in sizes of 50" or larger.
So it's now a matter of screen size and budget. You can get a similarly sized RPTV for much less than a flat panel. If budget is no object, go with a flat panel. If you prefer a bigger screen than can be done currently with flat panel (i.e. 60", 70" and up especially for a FP), then go with projection. The technologies are similar enough that I don't think there's a huge difference anymore, or a great advantage to choosing one or the other.
I have a 46" DLP that I've had for 26 months, and the bulb looks as good as new. When the bulb does need replacing, the TV will still look as good as it did on Day 1. Not bad in my estimation.
SXRDs are niiiice.