Never tried them. I've tried two. www.overclockers.co.uk .I ordered an athlon 2800xp barton from them last year for £120 (£50 cheaper than my local shop). I ordered it on a friday at 16.30ish and It came through at 08.00 on the saturday in the post. I ordered a 120gig hard drive off www.scan.co.uk and found them to be pretty reliable 2. Bit more expencive though.
HHhhhmmmmm they email you weekly or something - I got quite cheesed off (in a good way, for you) to see my Seagate Barracuda 80 GB qoing for about £45 (although I had to pay about £60 last November).... so what I'd say id they are responsive and when things are good and sell well - they give best price plus good service....
You see the "kicker is" as they say stateside, I bought that HD from them in the first place at £15 more!
So go for it (when you're ready- always a top tip not to let hardware be shelf ware, like I did, coulda saved meself £15!)
Ebuyer is quite good actually. There are quite a number of items that I found cheaper in Ebuyer than any other websites like Dabs.com or overclockers.
I'm not saying that they're the best and I don't have any preference on any of the online-stores. I shop around and see which sells a particular item I want the cheapest before I make the purchase.
Aye, ebuyer are very good. I bought my graphics card from there. I had problems with it causing my system to hang etc. I sent it back on Friday (special delivery) and got a replacement first thing on Monday morning! I would say that is definitely good after-sales service.