Metals406
Granfodder Runningsaw
I've been running semi on my 372 the past while, only because I have it, and it can cut pretty fast. All the vids I've posted of my 372 are with semi.
Yeah, all things being relative, semi does just fine. Slamm uses it for the river wood he logs, and that stuff is super embedded with junk. If you watch his vids, he does fine for production with semi chisel. The more time a cutter spends at the stump, the less money he's going to make.
Speaking of optimization, square will be the best choice for speed. As Dennis said, the end game is to sever wood fiber, not tare it out. If a guy can achieve that with his chain, it doesn't matter what the profile is.