Amps and speakers need to work together. The comments in this thread recommend choosing speakers first and then amps to drive them, which makes sense. However, it’s your system and your hobby so do what you like! :)
The tubed Mac amps you mention should work well with the classic Klipsch speakers.
There is a current production MC275, but a MC225 or MC240 would be 50-60 years old. Vintage gear can be fun and sound great, but be aware that older equipment requires maintenance, either by yourself or someone you trust. So be sure you’re up for that before making the choice. Also note that the MC225 uses a less common power tube (7591) so replacement options are limited. I used to own one I wish I hadn’t sold as it sounded quite nice.
I’m not familiar with the Mac SS amps in your post. My guess is that Sonus Faber speakers would be happier with SS amps.