I know the Pioneer was more expensive, but check out the Mitsubishi HC7000 before committing yourself to spending £3k+, it's one of the most impressive projectors we've seen under £5k. At £2680 (with an extra lamp as well), it's hard to spend a couple thousand more when that could be spent on building up a decent HD library and adding a top notch Bluray player that these sort of projectors deserve.
With the price rise of the SOny's and Panasonics, it'll put the HC7000 in an even better position.