Tough to answer that one for me as I shoot both, fixed and mechanical. The first arrow out of my quiver though is a Rocky Mountain Snyper so I did vote that way.
This past year I hopped on the Rage train. They work, but I am not a fanboy or anything. This year I may go to a G5 Striker. Who knows? Broadheads don't kill deer archers do.
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"Character is much easier kept than recovered"
Thomas Paine
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Deer coming into my treestand, a big non-typical. Setup is perfect. I draw back, take aim, and the pin settles perfectly on it's chest.....My thumb hits the release, arrow glides noiselessly toward it's target............then I woke up.....dang, another day of classes *sigh*
I voted don't know or care. Why? Because in my early years of bowhunting the bows were much slower, releases were relatively new or almost unheard of and I got passthroughs almost every time at 60 lbs. or slightly more shooting fingers and using 2219 or 2216 aluminum logs for arrows. Personally I feel if I get caught up in the speed game I'll be worse off. Not to say I want the heaviest or a heavy arrow for bowhunting, because mine is probably mid-range but IMO the high end of speed is for 3D shooting. JMO.