As others have mentioned, the Zwickey Eskimos are excellent (and are my favorites).
Designed to be re-sharpened and are very stout. Real life experience backs up the legendary performance - missing the target and hitting a concrete wall = trashed arrow and undamaged Eskimo - ooops!!!(employing the modification described below).
A slight modification of filing the very tip to a tiny, flat "edge" (like a "Tanto" point on the Cold Steel knives) is about all that needs to be done. With that, I'd bet the Eskimos will slice into and through anything on the North American continent - they definitely put the hurt on a concrete barrier - oops!
While i haven't shot one into a game animal yet, i do have a pkg of the Red River R1 broadheads in the 125gr weight.
The main blades are quite thick and seem very solidly fixed to the ferrule. I'm planning on giving them a whirl this fall so hopefully will have an in-field experience to report.