I think you'll find your musical tastes will help dictate which amp is best.
If you like big scale music (stadium rock/big band jazz, etc), I'd follow your instincts and be cautious. Big music loves power -and although John's products do amazing things with lower power amps (for smaller scale music), I've learned they also tend to respond extremely well with more (for big scale music). I don't think the Orangutans will be an exception. Not to say you need a 100W amp, but I don't know if a Montille would work for you. I'd try before you commit.
PS -the Orangutans take forever to break in -make sure you demo a pair that's well broken in. It probably explains why we haven't heard more rave reviews -it'll probably be another month or two before we do.
