I agree with the 3 blade Muzzys and I have a strong dislike for mechanicals. So no matter what I would be choosing fixed blades no ifs, ands, or buts about it..

My shoots a Mathews Passion at 40 lbs. with a 25" draw. Her arrow is a Carbon Express Maxima 150 tipped with an 85 grain G5 Montec and she usally gets a pass through unless she hits the leg or shoulder on the other side.

I'm thinking the same thing as the others, fixed is the way to go with that setup. I like the 3 blade Muzzy too, but any of the fixed that have been mentioned would be good too.

For the best penetration in hopes of getting a passthru I would say to go for the Magnus Stinger with that setup.