I see. No, sonically it's a great match.
Awesome. As an added bonus, the 180 is 4-ohm as well. I'm assuming there's no issue for a single amp to drive 8-ohm loads on 2 channels, and a 4-ohm load on a third channel?
On the numbers side, it's only $72 more for me to get the 180 over the 160 (180 happens to push me into the next loyalty discount tier).