in my system I have Neat Motive 3 floor standing speakers which I am bi-amping with 2 Quad 909s. Pre-amp is Krell KRC-3 and CD is Quad CDP-2 or Arcam CD73T (my Quad CDP-2 had to be sent back to Quad USA for repair - stopped properly reading CDs after 3 months).
Regardless of the CD source I am happy with the sound. Krell, Quad 909s and Neats are very good match. For Motive 2 you may be ok with just 1 Quad 909 since they demand less power and Quad has plenty even more than you need I believe. However Motive 3s like much more power for the best sound and I couldn't resist
Anyway I would recommend carrying the Quad 909 around while you shop for speakers and hear it first hand how power amp mixes with speakers in dealer's dedicated showroom. That's what I have done - I carried my second system Quad 306 around (since it sounds similar to 909 due to having similar circuit - current dumping - just less power) and it helped me choose the right speaker for Quad sound. Neats are coherent and very accurate so Quad's "non-hi-fi" nature mixes with them superbly.
Neat Motive 2 or 3 + Quad 909 is highly recommended combination - just if you go with Motive 3 I believe it is better to biamp although they work very well even with 1 Quad 909 driving them. Improvement due to biamping is not double for sure.
Hope this was helpful.