I can only comment on the Sony as I picked mine up on Saturday. Having spent a long time researching numerous models, and pestering staff in a lot of TV shops i went for the 46V3000 and I am extremely happy with it. My friend also has the 40" version of this and his PS3 - Blu Ray look amazing.
I have Sky HD, and the quality is excellent. Also look to pricematch this TV with John Lewis for the 5 year warranty. I managed to get them to do it for £1021 pm'ed with Sound & Vision