Doesn't matter what you use so long as you know they'll hit where you aim. Every broad head I've hunted with in 40yrs was a killer. But I've shot/tried many that I'd never trust to hunt with.
There are things to consider. Newer shooters often unknowingly torque their bow which "throws" the arrow off slightly as it's released. The vanes quickly correct it and with field tips the arrow hits where you aim. But fixed blade broad heads catch wind like a sail that counters the vanes somewhat, and the result is sporadic, erratic misses. They might hit up to a foot or more off from your field points even if your bow is well tuned. Shooting sufficiency is absolutely critical. I would recommend getting a broad head target and trying some different heads to see where you're at. NEVER hunt with a head you haven't proven to yourself. Different heads shoot different for different people.
Mechanical heads offer a little forgiveness due to low profile. Not absolute forgiveness but some. The trade off is durability. They're all fine for the first deer, but afterwards need to be closely inspected for bends or breaks or rough function. Replace blades if necessary but anything else wrong means a trashed head. At very minimum clean the head and hone the blades before shooting another deer. Same for fixed heads.
That's about it. Doesn't matter what anyone else uses. I've shot highly esteemed heads and couldn't get them to hit reliably at all. It's not the head's fault, just the way I shoot. That's why it's important to try as many as you can until you find the head that you absolutely trust to hit where you aim. They'll all effectively kill if they hit their mark. None kill better or deader. But none will kill if they don't hit their mark. Hitting where you aim is by far the most critical factor.
