I spotted that deal too but have never bought from digi direct, good to get a reccomendation for them as they are consistently cheap.
Dixons deal was frustrating but its all worked well in the end - I went with the 37" px80 instead as this suited my room/viewing distance better. £499 from comet, click and collect picked it up 2 hrs after ordering. Pretty happy with it so far, xbox 360 looks amazing on component cable, new V+ arrived without HDMI so waiting now one one being delivered.
I'm really glad I got the 37" instead of the 42", If I'm honest some SD content looks poorer from 7ft on the 37" than my old 28" TV did from same distance and I bet it would be even more noticeable on the 42", but I'm happy as will be watching HD and gaming in good quality and the room looks so much better with the flat panel than the big old crt. Good quality SD channels are acceptable and DVD looks good but I think a blu-ray could be in the pipelinen to take advantage (the xbox really does look that much better than before!)...
Dixons did me a favour!!