I can just tell you my personal preferences on mechanicals and carbon arrows.

First off, I used mechanicals for a season on aluminum shafts. This was about seven years ago, and I' m sure that there has been a lot of advancements since then. But, on the mechanical heads that I used, I found that the heads were just not strong enough. I shot two deer with the heads, and on both heads, I had broken blades. Granted, both deer were dead, but....Another problem that I have with them is that the were just not strong enough to take repeated practice with. Practicing with field point is good enough for some folks, and I will admit that the heads that I used did fly pretty much the same as field points. But I like to practice with my exact hunting setup. I just can' t afford to keep replacing the mechanical heads after practicing with them a few times. So, probably as you could tell, I pretty much use mechanicals exclusively.

Now on the carbons. I used carbons also for one year with muzzy' s. I was never happy with my groupings using carbons and fixed heads. I did take two deer with them, and both were pass throughs, but I like to stay with what works well for me, and that is aluminums and fixed heads.