This was my first impression of mechanicals. Kinda like a folding pocket knife that won't cut you accidently. I carry both heads in my quiver. The Montec G5 will go through the mesh of my ground blind without loss of accuracy, and these heads seem to do just about everything well - except maybe sharpen easily - but I have figured out a couple of tricks to getting the razor sharp. I also have a couple of expandables at the front of the quiver. If I ever need to shoot beyond 40 yards (hasn't happened yet), the expandable flys better.

One thing I have seen a couple of times - in slow motion on the video - is an expandable hit a small twig and one of the blades open prematurely. This, in turn, causes the arrow to pivot somewhat against the uneven resistance. It can cause a miss if the animal is very far past the twig. It can also cause the arrow toenter the animal at an angle if the twig is just in front of the animal - screwing up penetration and shot placement.