Parasound A21 or Odyssey Stratus

Cannot speak to Parasound, but I highly commend Odyssey. I had a Stratos Dual Mono for a good many trouble free years, and loved it. (I'd not have said it ran to the lean.)

Odyssey kit is routinely available used, and Klaus is a good guy who cheerfully supports 2nd hand owners.

You could much farther and fare worse.

John

Whoa what did you end up going with I have the same speakers just running off of a marantz , and would like something bit better 

You may have made this decision, so if you have great! But if you have not I will give my thoughts.

I had an Odyssey system with a Stratos amp. I am one of a few who had issues with the gear. Low buzzing sound coming from the amp. Although Klauz is a nice fellow, I could not get the amp fixed with him. It took too much time. Ended up with a Parasound A21 and would not go back. A powerful and smooth amp which powers my speakers with ease and sounds glorious. It never seems to strain at all.