In my college band, I ran through a pair of 2x15 cabs (4x15 total). Today, there are 1x15 cabs (fEarless F115) that go louder and clearer and deeper than my 4x15 setup.
I used to have a room full of cabs when I was gigging. Had a 1x8 GB cab, a 4x8, a 6x8, and a Henry 8x8. A pair of 410’s, a 115, a four 210’s, a pair of 212’s, a single 12, a single 10… had them all arranged along a wall in a bedroom and would grab which cab suited me for the gig.
Today I’ve scaled back to “just”: 1x8, 1x10, 4x8, 6x8, 2x12, 1x15, and a 4x10. Was thinking though that I could really use either a lightweight 1x12 or 2x10 in case I audition for a band. Those seem to be the perfect size for giving decent output in a band practice setting while still being lightweight and compact to easily transport.