Whatever gives YOU confidence.

Here is my opinion based on a pretty good pile of traditional kills:

Single bevel - Excellent penetration. Easy to sharpen with a file. Terrible blood trails.

3 Blade - Good enough penetration. Great blood trails. Near impossible to get sharp enough to suit me.

Double bevel - Great penetration but sensitive to marginal tuning. Good Bloodtrail. Very easy to make scary sharp with just a file.

Sharpening, penetration, and DURABILITY are everything to me. Durability is based on the manufacturer, do your homework.....

1. Arrow tune/set up
2. Broadhead SHARP
3. Broadhead style
I feel like we're all beating around this bush lol.

Zwickey Delta 4 Blades since the 80s

I have also killed the random animal here and there with Sponsors heads from time to time. WIDE 2 blades and 3 blades.

My 2000 pound plus bison was killed with a Wensel Woodsman.

Never killed anything with a single bevel.  See no need to try.

I find single bevel very easy to sharpen but not impressed by their blood trail. For wild boar my to go are the Simmons Tree Sharks.

Never tried the single bevel. I've always used either Zwickey Eskimo or deltas. They always shoot great. No need to fix it if it's not broken.

I never bought into it. Doubles for me for so many animals I had no reason to change. Most are too narrow for me.

All this broadhead talk got me thinking of the unbelievable broadhead collection at Western Recreation in Poncha Springs Colorado. This is 50 or so years of broadhead design in these cases. Goes to show there are really few new ideas anymore, but I don't recall any single bevels. It is a relatively new concept.
These are all in the archery range, not the showroom.

More pics

An aside, Id like to try a 200 grain Annihalator Katana.

Cool pics. Thats a pretty extensive collection.

All things being equal I think it's fair to say single bevels penetrate deeper and have a larger potential to breech through heavy bone on heavy game. Ashby has already covered that.

I shoot primarily deer, feral pigs, and black bear in the Midwest. All of these animals are medium sized game animals without heavy cover, heavy bone, or thick skin. I consistently get complete pass throughs on them all as the norm. I typically shoot Grizzly single bevels for deer and some 3-blade single bevels (I forget the brand...maybe VPA?) on bear and pig so the blades can cut more and bleed more for tracking. That said the only reason I chose single bevels for these uses is because it was an option with the head I was already buying anyway. I wouldn't hesitate to put a sharp double bevel though the boiler room on ANY of these species whatsoever.

In my experience I really just want the following and I feel very, very comfortable amongst almost all N American game:
1) excellent flight and a balanced head that spins true
2) SHARP points and good shot placement
3) heavy arrow build with some weight up front
4) arrow build that doesn't fail (many of the super light broadheads curl up if they graze bones)