I'm a believer that shot placement is way more important than the broadhead.
A lot of good advice on this thread but WapitiBob probably covered it all with this statement.
That being said, I personally prefer a large diameter expandable. If the shot is perfect it won’t matter, but when the shot isn’t perfect is where the larger cutting diameter and larger exit holes shine. Living in a place where I get 6-12 bowkills a season I’ve had opportunity to make a lot of great shots... and a lot of not so great ones. On the great shots any head on the market would’ve probably worked, on the marginal shots I’ve definitely benefited from big cuts. On really bad shots, well, no broadhead would’ve made up for the human error behind it.
I read your antelope story, sorry you had that experience and it’s a tough pill to swallow. There’s always a lot of things we could all do differently, you’re trying to learn from your mistakes which is the correct path forward. You got bucked off, but get back in the saddle. A large diameter expandable may have cut more tissue and slightly changed the outcome for the better, then again maybe not. The IF factor is a hard thing to pin down.
The heads I can remember I’ve killed with are NAP thunderheads, Muzzies, NAP spitfires and spitfire max, satellites, rage, NAP Doublecross, gravedigger cut on contact, gravedigger chisel tip, gravedigger extremes. My favorites hands down are Spitfire Maxx by NAP, and the Bloodsport cut on contact Gravedigger. Those two have always had the best blood trails imo.
Good luck and don’t quit!