personally i'd go for the brand new yamaha dsp-ax763 model at around £350, its a brand new 2008 model and is supposed to be excellently specced and has had some rave reviews.
only drawback is it only has 2 HDMi inputs, but they are the 1.3 version that carry audio as well if needed (some dont).
this is the amp i will be looking to get in the next few months
regards
rory