I don’t claim to know much about axes but here’s my opinion based on beating on a lot of wedges. A good wedge pounder should be proportionally heavy enough for the size of the trees you’re lifting,I like the striking surface of the head to be wide and slightly rounded. some axes are narrow and flat with sharp edges and they eat up wedges fast. Ever look at the face of a golf club, like a driver? It’s not perfectly flat, it’s slightly rounded so you don’t have to hit the ball perfectly square. Gives you more of a sweet spot. The distance between the handle and the striking surface is important. Too far and it has more propensity to twist in your hand. Too short and it’s easy to hit the handle on the wedge and break the handle. I have modified axes with a grinder to get a more wedge friendly profile, dipping in a bucket of water to keep them cool. Council axes are pretty inconsistent and that is sometimes good because you can look through a bunch and occasionally find one that’s wider with a shorter poll and they pound good. Collins aren’t too bad, a little long in the poll. I cut one down a bit and changed the striking profile with a grinder and I like it. It’s like a poor man’s Stroh although I lost a little weight from the mod. There’s my long winded opinion on wedge pounders