Art Audio Carissa Sig or Viva Solista Lt ???


I'm considering getting one of these 2 amps which both come w/ volume control and both are 845 variants. Anybody who doesn't live in the sticks like me who may have heard these 2 fine amps give me some feedback? I know both will drive my speakers fine. Just wondering which will get me closest to SET heaven.

Thanks all.
marklivia
Haven't heard the Viva, but I've owned the Carissa before. It's a nice amp, but I much prefer my Line Magnetic LM-518IA. One thing to consider about the Carissa is support as I'm not sure who the US distributor is.....if there is one.
I haven't heard the Viva, but I own an Art Audio Carissa Signature and can tell you it's an absolutely superb amplifier.