The best straight-ahead jazz tone I ever heard was a two-pickup Gibson Johnny Smith through a JBL-equipped Deluxe Reverb - only problem was that it weighed as much as a Twin...
The blue-check mid-60's Ampeg Gemini II (and to a lesser extent the rare B-12XT Portaflex 2x12" guitar amp) was the sound of the NYC "Key Club" A-list studio players - and they sell for about half the price of a Fender of similar vintage/power...
Randall RG-120 "orange-panel/grey-panel" combos - available in a variety of speaker configurations - are grossly undervalued on the market, built like tanks, and were arguably the first solid-state amps with any real tone...
Think old-school analog - tube or solid-state - and loads of clean headroom, and you'll be on the right track...