If you're looking at 18 watts then a Reeves Custom 18 is dead on perfect
and true Mil spec hand wired and also available with power scaling.
If your budget is too tight for a Reeves, then
you might want to consider a used Reinhardt 18, Germino, Aiken or Ceriatone Marshall build.
All hand wired, the way a good Marshall should be.
Don't look at me in that tone of voice
Put music in your heart
and heart in your music