After many years (decades, really) of being a dedicated solid state guy, a few years ago, I took the plunge and picked up a Prima Luna Evo 300 Integrated Floyd. After about a year, I got curious, and rolled the very respectable stock 12AU7 tubes to NOS 1960s (for the signal pair) and 1970s (for the 4 gains) RCAs. I've been really happy with the tube front end / SS back end, and the sound with the NOS tubes is just sublime.
I know there are other, more rarified and more modest choices out there, but for me, the Prima Luna really hits the sweet spot, and represents a solid value for the money. Happy hunting!