BAT VK -200 vs. McCormack DNA 1 Deluxe?

Currently running a BAT VK-5i preamp and McCormack DNA 0.5 with Magnepan speakers and looking to upgrade my amp.  BAT makes sense for the synergy but also impressed with the McCormack so far.  
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The nice thing with McCormack is that you can send it to SMc Audio and have it upgraded. Letting know what is in your system can help them customize the upgrade.