Tube amp selection- for Magnepan 1.6QR

I recently sold my Bryston 4BST and I'm planning on replacing the amp with a tube amp. I've narrowed it down to a few amps (so far) and would like some advice and opinions as to which would be the best for my needs.
System is a pair of Maggie 1.6QR's, Balanced Audio Tech VK3i preamp, Phillips 963 SACD. I'm using Signal Cables throughout and have a PS Audio 300 for the preamp and 963. I'm considering the following;
BAT VK-55
Cary 805C monoblocks
Jadis Defy 7

I'd like to hear from the community as to which setup would drive the Maggies with some authority. Would I be happy with any of the above, if so, why? Also, would anyone recommend not using any of the above? The speakers are currently in my bedroom, which is 15' by 20' wide. Not huge, but they sounded great with the Bryston. Anything else you want to add would be greatly appreciated!

Thanks for your help!