I really like EL84’s ((7189’s)
I have a Scott 222D which sounds lovely - Craig at NOS Valves did a full rebuild of it. Have a pair of Heathkit UA-1’s I’m doing a complete rebuild of, using original build instructions combined with some mods. I also have a Heathkit SA-3 SE EL84 and I’m doing a second rebuild of that. I have iron and am planning on building the R84 MKII, which I am excited to hear.
Most of my speakers are pretty efficient, so power has never been an issue for me.
Like most things in audio, implementation of the tube, circuit design and speaker choices will matter.
My other tube amps include a Cary El34 PP integrated, a modified A12 SE EL34 and a Craigtone/Korneff DIY type 45.
As has been said above, older amps, properly restored/rebuilt will perform really well, and above their price point. Plus, they look cool :)
The EL84 has been referred to as the poor man’s 300b. Lovely tone from those little tubes.

