Simply currently has the best deal for the Hitachi 7k250, which is why I am considering them.
Dabs was the first online store I used and they've mostly been okay. Their customer service number takes a while to get through though. Free shipping was a nice thing as well although it is now a thing of the past.
And their price were highly competitive with other stores you'd find advertised in computer magazines.. But eventually, I found other stores offering better deal, and I haven't bought anything from them since...
(Well, indirectly, I got one of their ex demo printer at dabsexchange recently. £70 for a £130+ printer. Nice thing is - seeing how the ink were never used, it was probably an ex display rather than an ex demo).