I have owned both and still own the Bama. Buffalo was a great bow, but it was a traded bow and the grip was too large for me.
One thing I will say is that Nates limb design is not quite like any other I've seen in my limited exposure to trad. His limbs have deflex, reflex, and slight deflex again at the tips. They almost seem to have let off when reaching anchor. I've shot a few now and this one is still my goto.
Give Nate or Jim a call and discuss their designs, wait times and grip options. Both are awesome bowyers, but this is such a personal thing you need to do your own homework unfortunately.
Keith