My local HT store has two 1080p projectors--Sharp & Sony. The picture looks okay, but not even close to being as great as a Mitsubishi DLP Diamond Series.
My old SharpVision projector is 4000 Lumens. I remember being able to see the picture in bright light, but definitely not even close to being as bright as any DLP/LCD/Plasma TV in bright light.
So that's it then. No projector for me. I'm thinking about that 73" MIT DS DLP.
But I really hope MIT will come out with a 80-inch DLP.
...Then mine will be bigger than yours...