Selecting tubes and tube amps to suit your needs is very subjective, plus there are a bunch of variables that are unique to each situation. Pick a well regarded amp circuit as a starting point, and get your feet wet...you can taylor the types and brands from there as needed.
I’m running two Dyna/VTA ST70s in a vertical passive bi-amp configuration, which allows me to use different tubes on the woofer channels than those on the tweeter channels. They’re all EL34s, but there are differences between brands, and it’s fun to experiment with them. My stock driver tubes are 12AU7, but I recently opted for 12BH7s in the more critical positions...I love those.
My amps have a manual bias that’s really fairly easy to do, and once set, they don’t drift much. No worries if you can use a voltmeter.
I’m driving speakers of average 89db efficiency. I can run the amps in triode mode at 20wpc, or ultralinear at 35wpc. The vast majority of the times I opt for the clarity of triode mode, and almost never feel the need for more power or more volume. There’s so much room ambience, inner detail, and dynamic contrasts that I don’t feel the need to reach ear bleed levels anymore ....100db is more than enough to annoy my wife! Love the tubes, and will likely never give them up because of the glimpse into the studio that they offer. Good luck!