Recommend broadhead for bear hunting.
I would avoid using a mechanical broadhead, and what you're using for whitetail is just fine.
I've switched from Muzzy broadheads to Slick Trick Magnum 100 four blade heads only because Slick Trick uses a steel ferrule and Muzzy uses aluminum, which isn't quite as tough....
Formerly Steve @ G & S
Only reason I didn't get a pass-thru was because the angle I had put the exit through the opposite shoulder - could feel the point just under the skin.
Ran 50 yards out, 20 back, and piled up - all in the span of about .00005 seconds (or so it seemed).
I might not have read it right. But the blades for the the NAP thunderheads are made by a company in IL. Owner happens to be a personal friend.
Good luck this season!!
Also heard a few outfitters in Iowa have put a ban on expandables for their deer camps.
The best strong solid steel ferrule head I have found with replaceable blades is the Slick-Trick. They also have German made Lutz sharpened blades like the NAP Thunderhead which are the sharpest in the industry. Just replace the blades as they do get oxidized and dull over time.