"What about an ARC 75SE…? They come on the used market often and it may give you an opportunity to see if the upgrade to an 80s or 160s is worth it…? "
I would shy away from any product that often comes on the used market! This likely happens for a reason, e.g., there are issues with it.
Ask you local dealer if they have an amp for you to audition. Or check out amps from some online companies that offer trial periods. Some offer up to 45 days which should be plenty of time to make a decision. SPL amps look interesting. Good luck.