For 36 grit I haven't found anything to come close to Norton r999b ceramics. They beat the piss out of blaze, and are noticeably better than vsm.
In 60 grit I'm still looking for my favorite. I've been running vsm xk760 ceramics for a while, but mainly because I still haven't finished the pile of them from a few years back. I do quite like them though. I've tried blaze 60s (don't particularly like them) the various klingspor ceramics (even worse than blaze) and a few others. 3m 984f cubitrons are my favorite, but they aren't 3x better than vsm.... I'm trying a few other ones too, so maybe I'll find something better than vsm, maybe I won't.
120 I rarely use, but mostly use blaze out of convenience as they are the easiest to get for me. I do most of my blade finishing with a combination of Gators and Cork belts.
Everything else I run is Klingspor. That's mostly because I have a klingspor dealer with very good prices locally, but they are my favorite belts regardless. I keep x weight 220 zirconia belts around, and 100, 220, and 400 grit jflex AO. I split them either in half or quarters to use for handle shaping.
I have a whole pile of other assorted belts, but they mostly just take up space and collect dust.
I'll add that I hollow grind almost exclusively apart from kitchen knives, and I have a really low tolerance for slow belts. I usually toss belts on the profiling pile with upwards of 75% of their life left. Initial cut speed and how long that initial fast period lasts is a lot more important to me than how much grinding it can be forced to do.