Depending on your power needs, if this is quite low, I can make some suggestions. I have used a Viva Solista, Lavardin IT, Karan K180, Pathos Inpol2 and Ayon Spark over the years. I use the last 2 at the moment and both are the best I have used. The Spark is a tube SET putting out 20 watts, the Inpol 2, more expensive and a tube SS hybrid with 50 Class A watts. Both are veery good, if different, with my 96db sensitivity Daedalus speakers.
I would say both amps need north of 90DB to be comfortable long term. If that is possible, either would be great long term choices