Dan - I don't know about your hunting situation but personally I do not care for a one pin sight. I hunt the woods and a deer can pop out of nowhere and disappear just as fast and at varying distances. I normally range trees all around my stand and I use a 5 pin sight. IMO fiddling with a one pin sight getting it set at the proper range wastes valuable time and maybe costing you the buck of your dreams.
As an example, I watched Phil Phillips draw back on a bull elk that took him by surprise and at 20 yds he shot about 3 ft over his back. He stated later that his one pin sight that he normally has set at 30 yds got bumped and was set for somewhere around 80 yds.
Its your money but you might want to reconsider. And good luck with whatever you choose.