+1 on this, definitely check out his you tubeBowhunter64 on here, (Lusk Archery) on You-tube has done a lot of B-H testing. Look him up. Might save you some time.
Completely agree! If the bow is tuned, I prefer bareshaft tuning to 20 yards, and the head spins true, there is none that won't fly beautifully!I am assuming you are testing to see which one flies best----with the right setup, they all do!
I shoot a fairly heavy [500gr] arrow with plenty of spine 300 Axis....and when my bow is tuned with the arrows assembled perfectly on a jig....I can shoot any 150gr or 145 gr bh to the same POI. I tune with the big VPA 3 blade...and everything else 2 blades, 3 blades- etc. shoots lights out.
Now if a guy is shooting a light spine, light/fast arrow that type of thing....its a more critical setup thus there will be a smaller collection of BH's that will tune well....and those are typically the small short heads.
If you are underspined or even borderline....sometimes no BH tunes well.
______