4x10s. I rented a Traynor YCsomethingQsomethingV (apparently YCV80Q) for a couple months of rehearsals a long time ago because I'd just moved and had sold everything except my main guitar at the time and a Boss multifx. I got the 4x10 because it sort of fit the look/vibe of the band and the space was a lockout, so I wouldn't have to carry it. The amp was a modern Traynor so 'pedal platform' at best, but the semi-open-back 4x10 cleans sounded really, really good in that big open room, better than a 4x12. Punchy, clear, controlled, detailed. If I was ever in an unlimited-space situation I'd look for a 4x10 something just to see if that's a whole thing, or if it was just a particular room situation.
Anyway, I always told myself I'd try a Blue Angel (or a Heartbreaker) if one showed up locally but it's never happened.