RE: heads
As sweet as it is to watch birds getting decapped on the internet by gillotines, they just seem to be too anti-aerodynamic for me. Not to mention to expensive to practice with, meaning by wear and tear on my targets, and having to completely re-tune for spring.
I am going to go with an expandable like a Hammerhead this spring. I've shot a lot of birds with the gun, but haven't had a go with the bow yet... looking forward to it!