I have had a few dealings with Sound & Vision over the years. The first time I bought a pair of B & W speakers - a good price and no problems at all.
The second time I bought a Sony AV receiver. Unfortunately, just outside of the guarantee, it would occasionally switch itself off. I went back to see what could be done and I was told that AV receivers had come on along way in just over a year and I should buy a new one. I thought that they may offer to have the receiver looked at by one of there engineers to see what it would cost to repair, but I was simply told that it wouldn't be worth it. I did eventually buy a new receiver elsewhere.
The last time I contacted S & V (with some reservations) I was after a price for a plasma screen, infact the model that I eventually bought. I was told that they could get one for me for the best price anywhere. They asked where and what was the best price I could get one for, I told them, and their reply was it must be imported stock or a returned item. Anyway, they still insisted they could sell one for a better price and they would call me back soon. I called them back a day or so later, they apologised for not calling back and said they would definitely call me by the end of the day. Nothing. This was repeated a couple of times. The final time I called them, almost a week later, I was given the same apologies, call you back etc. I then ordered from the company that gave me the good price that Sound & Vision were trying to beat. I'm still waiting for S & V to call back nine months later.
Finally, a friend of mine has a brother who ordered a plasma screen from S & V. After being given two or three failed delivery dates, he was told that the screen would be dropped off in the early hours one morning, directly from the warehouse to save him having to take another day off work. He got up very early (4am comes to mind) and needless to say it didn't turn up. He also went elsewhere in the end.
Form your own opinions about those facts but I certainly wouldn't contemplate buying from S & V again.