Erhm.. Some people have reported they didn't like the sound. I have also seen people write that digital receivers can not drive electrostatic speakers (or have some problem with them). I don't know whether either statement is true or false. I know a few guys here on the forum have a Philips DFR9000 (not sold in the UK) and they are totally happy with it.
Best advice: Read a lot and visit a good hi-fi store and do a listening test. Then choose based upon your own experience.
I have SA-XR700 (I bought it about 3 month ago) paired with Mordaunt-Short 900i series speakers and I cant say a bad word about this amp. It does everything I need and sound is superb.