Good decision! Muzzy's won't fail you like them mechanicals can. To me these Mechanical heads are not bone crushers, it seems when they hit good bone they are done. I've talked to a few guys around my area who tried them as well and there expeirences were not very good when it came to them hitting bone, if they went in between the ribs they had pass throughs for the most part when they opened up.A few even told me when they had the deer quartering away at a sharp but shootable angle, the rages bouncedoff the ribs and in the dirt they went! To each there own I guess!