In answer to the original question, I have recently used them. On Tuesday night I was looking for a new surround sound system, and decided on the Samsung HT-H7500.
BestAVDeals.co.uk had the unit at £539.00, £60 less than any other price I could find, and £210.00 less than John Lewis, in response to Vickster. They were also including at no extra cost the new Samsung WAM250 hub.
They didn't have stock, but said it was available to order. I dropped them an email just asking if they knew when they would be getting stock. It was about midnight at this point. At 9:15am Wednesday I had an email back confirming that stock was due in on that day, and if I ordered before 1pm it would be despatched that day. On a sidenote, I had a slight issue with the payment as I had literally just moved house and hadn't changed my details with the bank so the payment got stopped, but I just paid with an alternate card over the phone. I spoke to a guy called Ben and he was extremely helpful and knowledgeable, and clearly had an interest in the kit he is selling, which I think always makes a difference.
I did so, and at 7:15 on Thursday morning the delivery arrived. That was only this morning, and I then had to go to work so I've not checked the unit yet, but the box is in perfect condition. So got to say, very happy so far with BestAVdeals and all being well with the player I would certainly use them again!