The new WE91E can drive more difficult speakers and reasonably powerful at 20W. So if budget is no issue, go get it.
The majority of other SET amps are more modest in power. Your choice of stand-mounters will be limited if you insist on SET amps.
I have a Cobra for my 2nd setup at my workplace. It is excellent if you want to keep your setup simple and save on cabling.
Our musical taste is not dissimilar, I highly recommend you consider the Frenchs, I think no other brands do mid like them.
The newer Triangle Duetto 40th is reasonably priced. I enjoyed auditioning them and they pair well with most amps.
Focal Sopra No 1 is slightly more expensive and has a more refined presentation, but I do think the Triangle is a more fun listen. The Triangle has more drive, essential for classical listening.
Cabasse Baltic, the ones I pair with my Cobra, is incredible and pretty much a swiss army knife speaker, but need to integrate a sub.