what center speaker to go with Kef 104.2

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.

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.