I take Ibo stats with a grain of salt. They use a super light arrow and nothing on the string with the bow maxed in poundage and draw to achieve it. Sorta similar to car company's using crank HP unsteady of rear tire HP numbers.
I am going to have a dloop and peep on my string along with some cat whiskers.
My hunting arrow weighs 417 grains. I use an arrow calculator to find what setup gives me the most fps as well as kenetic energy for hunting.
Normally anything over 300 Ibo will be enough to kill anything in the lower 48.
Shoot both and buy what feels nice to you. If given the choice to use a harsh drawing fast bow or a smoother slower bow.. I would take the smoother bow.