I found myself in a similar situation years ago being a fan of 845 and 211 amps and struggling to find the a more powerful amp using them to pair with my speakers of choice. After much hunting, I couldn't find anything that made sense beyond 50-55w. That led me to consideration of OTL amps using 6AS7 and other amps using 6C33. Atma-sphere and BAT respectively. IMHO both are worthy of consideration if your tastes run to 845 & 211, but you're looking for something that can drive a bigger load. I preferred both to most other higher power designs I've heard running the typical 6550s, EL34s, etc. Cheers,
Spencer
Spencer