With todays fixed blade broadheads I see no reason to use a mechanical head. I shot the magnus Stinger Buzzcuts last year and they flew exactly the same as my field points. Also the Slick Trick heads fly perfect with your field points if your bow is tuned right. Im sure there are other heads that will do this as well but these are two that I have had great experiences with. Mechanicals will fly well and do the job as long as the shot is a perfect shot. As we all know if you have bowhunted for awhile every shot is not a perfect shot. I dont mean taking bad shots I mean that once you release an arrow alot of things could happen such as the deer moving or hitting a twig ETC, ETC........