what preamp to acompany my conrad johnson mv55?

I recently bought a Conrad Johnson MV-55 tube amp and I'm in need for a nice preamp under $1200. I've been looking at the Mark Levinson No.28, Krell KSA and Krell PAM 5. Not to forget the CJ PFR. I'm not a big fan of the CJ PV line due to it's simplistic appearance (though that can be a good thing according to some people). Any feedback is greatly aprecciated.

Thanks
Shahen