Some bowhunters will make the choice of a mechanical because they can't get a fixed blade to fly correctly.
Don't make the choice of a mech. based on a poorly tuned bow. The fact is that fixed blades are 100% guaranteed when it comes to blade cutting hide, and your bow can be tuned to shoot today's accurate flying bh's at 300+ fps if you are willing to commit to that end. I'm not saying that the mechanicals are no good. They are excellent, but even a mechanical out of a poorly tuned bow won't do it's job. If it contacts the animal while fishtailing or corkscrewing it's robbed of Ke. and the blades may not open properly or penetrate as it should.
Some bowhunters make the choicebased on terrain and distance of the shots they will take. A mechanical may fly better on a 50yrd shot at a moosein a 20mph crosswind in open country,than a fixed blade.

Make your choice based on reasonsOTHER thanthe tuned condition of your bow and go kill something.