Most of my bag is pretty mainstream, at least "DGCR mainstream." That's cuz you guys have helped me figure out my bag more than anyone else.
So I'd say Polecat, or Relay, or Ion, or Comet, but there are plenty of cool kids around here who throw those.
Probably the real surprise in my bag is a Star Beast. I found one a couple years ago and was surprised by how useful it is for me. In 175g Star, with a little dome, it's got enough high speed stability to be useful forehand. The glide is also awesome, making it useful for hyzers that I want to travel fairly far laterally. It's surprisingly susceptible to even slight headwinds and crosswinds, but as long as I avoid those it's great. I've since acquired a few more, and there are definitely some duds out there. But I think it's a surprisingly good mold, and speed 10 is probably about right for my arm speed backhand, and allows some touch forehand.