If tone is all you're after, it's hard to beat a Dual that you've pulled half the tubes out of to run it in 50W mode. That way you still get tube rectification, and IMO it sounds better than a single. Of course you can do this with a Triple as well however the ohm match doesn't line up square when you do it here (according to Mike) FWIW..
I tested this once looking to find evidence of the "girth" of the extra HP on the mic, when what I really found was that the tone had better cut with less tubes. I've seen the same thing on other Rectos since then.