Always remember putting together a B&W CDM1se/Audiolab 8000a/Marantz CD17 system, which worked extremely well together. The CDM1se's do like a lot of bass control, so don't settle for a budget amplifier, as many won't get the job done. My starting point would be the earlier 8000a (not the current one), but if you can pick up an 8000p/c pre power, they'd definitely do the trick!!
Otherwise I'd be recommending the Arcam A28, Cyrus 8xp, Harman Kardon HK990, Primare I21, Rega Elicit, or the Yamaha AS1000. The very entry level point I wouldn't go below would be a Rotel RA1520, which would roughly be on par with the earlier 8000a's. The Audiolab or Rotel would be ideal if you want to keep the budget down.