Older Tannoy coaxials would be great. Very mellow ,very efficient and very expensive. What would be your spending limit?
You will surprized at the number of speakers that 50 watts will do well with. I have some Von Schwiekert VR2s that worked bout beautifully with a 40 wpc pp tube amp with a sensitivity of 88 db/w/m. I used them for years with amp. I currently have them hooked up to a bigger amp but the smaller one was fine, with a Music Hall CD-25 BTW.
If you like horns the world is your oyster but you don't need them unless you really want it loud ,really like, kinda, extremely, very loud.
I held onto my Klipsch Heresies from 1976 or so but that is not not for the mellow chamber music with the Sunday paper.
If you are a head banger think about getting the modded vintage Klipsch . The crossover is designed by several modders to be more balanced and seamless.
Come to think of it I can spare some Klipsch La Scalas for you to try!! Only 104 db /W /M.
BTW all wood not counting the metal bits