I would suggest shooting them both just for feel. They both have the same cam so the draw cycle is going to be very close. The Pantera, being 3" longer, will feel a bit smoother and definitely the more consistently accurate. Longer is just more stable. Some people will argue with me, but I've been doing this too many years and find short bows more finicky than their longer counterparts. If you're taller than about 5'11" you'll probably find the string angle fits you better on the longer Pantera, too.
The Bengal might be better suited if you shoot (hunt) out of a ground blind, but for treestand hunting 3" more isn't going to make that much difference. Afterall it's only 1 1/2" on each end. Me? I'm 5'8" tall and find anything shorter than 34" just doesn't sit well with me and I personally shoot bows about 38" the best. I just can't find them in my draw length any more. Seems like everybody wants to shoot 30" and 70# these days. I have need of neither.
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