what center speaker to go with Kef 104.2

I would think a Kef 200c would be exactly what you need.
These are fantastic sounding speakers, i think it sounds better than my B&W HTM-2.
Hope this helps.

I'm going to put another 104.2 in the center to match. I have the kef 90 and dont think that it is a close match, as mathcing is so important in the front soundstage.

My post won't help, but I've been wondering the same thing. I have a pair of the early 90's vintage Raymond Cooke bi-wired 104.2s. Fantastic speakers. I assume the Reference 200c will work and perhaps even the older 100c. What will you be using for the surrounds?

I'm using the kef 103.3 for my surrounds which are the sister speaker a model below the 104.2. The 103.3 would also be a great center speaker which theres a set on here for 400.00. I have actually used one of mine as the center speaker. They match timber wise.