Having read many posts on these forums regarding the subject of online retailers espessially concerning the purchase of a bulky item like a windscreen tv, i would suggest your best bet would be to purchase from a local retailer, prefferably your local specialist hi-fi/home cinema retailer and not one of the big chain's !!
Pay by barclaycard and get them to price match the cheapest online retailer, then you benifit from the price and better service, this forum is littered with posts from people with nightmare stories from people who have been shall we say dissapointed with the service recieved having bought online, and if you have problems with your local retailer im sure he will be falling over himself to ensure your satisifaction if you went in complaining about his service on a saturday afternoon !
In an ideal world every £1000 tv would be perfect but just like British Leyland used to make friday afternoon cars which were a pile of junk so it seems there are friday afternoon tellie's with bundels of problems !!