Pre-amp for Magnepan 3.6 and Bryston 14B

I know Magnepan often demonstrates their speakers with Bryston amps. But what would be a good preamp to use with this set up? Specifically, I have Maggie 3.6s and a Bryston 14B and am looking for a preamp to match. I am looking at Bryston BP-26, Bryston SP2 and Wyetech Ruby. But I want to hear from others who have a similar setup and what they use.

Bring on your ideas.