Pioneer DV575a. Plays DVD-A's too

If you literally only want a CD/SACD there is a Sony E-line model for £120 odd from Empiredirect but the Pioneer would do a better job and is very tweakable

You could also look out for a secondhand Sony SCDXB780 or 790, which have got the more upmarket QS build. My moneys firmly in the Pioneer camp though. One last thought- Pioneer 747a's such as mine can be picked up s/h for £150 now and i remember people saying the CD playback quality was up with £150-200 standalone cd spinners.