I don't see any difference in flight between the 1" and 1 1/8" cut versions, they both fly like darts out of my set-up.
I have finally settled on what heads I am using for this season.......3 Slick Trick 1 1/8" Mags and 3 Muzzy MX4's.
Which I will pull from the quiver? I won't know til' I'm 20 ft up.