Confused... Projector or Plasma???????

I am in the middle of assembling components for a dedicated home theater room. It will have 2 rows of seating. 2nd row I gather would be about 16' from the screen. Don't know whether I should be looking at a projector set up or plasma set up. I would like the screen size to be between 5' ( i have been looking at the new pioneer elite 60") and 7' in width. (5' is probably a little too small at 16' away)I would assume the projector would be the way to go for anything above 60" at the moment(cost concerns). Which set up has the best picture quality? (if you were to compare 60" screens)What's the biggest bang for the buck?