Dope idea for a thread. That's some memories right there, bruh.
I'm in Canada, early 90's I had no way of seeing any of 'em, but I had read about 'em in PWI or some shyt. Just going by that coverage it seemed like SMW was probably No. 3 so that's how I voted here.
BUT, without getting too far off topic ... in '95 our family moved into a house that had an old satellite dish in the backyard, we used that to pick up some random U.S. channel that had a different promotion's wrestling on each weeknight (ECW, USWA, SMW, something called Deep South Wrestling, and one other that I can't remember). I thought both SMW and USWA were dope even if they were low budget and corny as hell.
Seems to me that USWA ring in their TV studio was like 10 x 10 feet, didn't look too level either. Dudes couldn't do shyt in there work-wise.
They definitely went heavy on mic work. Lawler seemed like he showed up in every segment of every episode. Same thing for Cornette in SMW.