I'm a directly heated single ended triode kind of guy and have used many types of amps over the years: 45, 2A3, 300b, 845 and 805; and a variety of speakers: Klipsch, Edgarhorns, RCA LC-1a's and Merlin VSM's. The 45 or 2A3 coupled with the RCA LC-1A's is a favorite combo. For the front end I have a Cocktail Audio X50D streaming to a Rockna Wavedream Signature DAC.
Music-wise I'll go anywhere, Americana to symphonic classical, etc. Well, death metal not so much.
Currently I've been exploring high powered SET as well as class D with less efficient modern high rez speakers like Magico A3's. The journey continues.