I can't give the answer you are looking for, but to be honest, bullet weight is secondary to accuracy, and controllability. Remember, shot placement is paramount, and the ability to put a follow up shot may just make the difference when you really need it.
if you can afford it, get a box of each brand, in different weights, collect up a bunch of news paper to make some wet pack, and or start keeping your milk jugs to fill with water. After you function check each round to ensure it works FLAWLESSLY in your weapon, and narrow down your selections, move onto the wet pack or water jugs. Remember, every ammo, performs differently in every gun. The only real reliable source, IMHO is to try it and see what works for you, in your gun, in your hands.
F.Y.I. Wet pack: stacks of paper that you soak till completely wet through and through, should be at least 6" deep to be sure. The water will aid with expansion, and while not an exact duplicate to the results of shooting a BG, it should give you some reference to compare between rounds.