Constellation Inspiration Monos or 1st Gen Centaur Stereo

I'm currently using a pair of 100W class A amps from the 90s (Sony TA-NR10) and thinking of trying out some more modern designs.

Locally there's a pair of used Constellation Mono 1.0s and a 1st Gen Centaur available for the same price. Home audition won't be possible so curious if anyone here has experience with both and can offer any insights on which might be the better choice.

My room is not large so the difference in power is not a big concern. I will not be using a Constellation pre.

No idea as I've never heard either, but just like you I'm interested in both and would like to hear other's opinions.  
Domino22 unfortunately im not able to answer your question, but is it possible you could contact me if you decide to sell your TA-NR10's? :)
Get the nr-10s’ upgraded , cleaned, ,recapped, anything to renew them.
those are a special pair of mOnos. Use in a 2nd system.
I would get them overhauled by a great company to like new condition/specs.     Weren’t the nr10s’ Japan special order only,?

 Keep them!