Best Amp for Eidolon

I purchased Avalon Eidolon speakers this summer and am getting ready to upgrade my amp. I currently have a Krell KSA 200s with a BAT VK5SE preamp. I am considering the BAT VK-150SE, Rowland Model 12, Accuphase A-50V, Krell 350mc, and the Boulder 1060. Any thoughts? I am especially interested in hearing what other Eidolon owners are using. Mike