Amp Upgrade for Aerial 10t's

I've got a pair of Aerial 10t's driven with a MacIntosh-7106 amplifier. The amps 6 channels are bridged to 3 at 200 watts each (third is for Aerial Center Channel). I'm looking for recommendations for upgrading the amp. My thought is to use the 7106 on the center still and get something new to drive the 10t's.

Two amps on my research list are the Plinius SA-250 and the BAT VK-500.

Any recommendations are appreciated.

-Mike