My recommendation is the Great Northern. I have had (and sold all of them) Boa's, EFA's, and Selway’s, hands down the Great Northern out preformed all of them. To keep the topic from being pulled I will be nice and not go into some of my experiences one of the first three mentioned.
The one thing I do not like about the G/N (and a couple of the others) is the foam they use in their hood, it is noisy when removing and repacing an arrow and the factory located holes in the foam are too close to the outer edges, which can cause the feather to rub on each other, especially if you use large feathers. Fist thing I do is replace the factory foam with high density foam from the local kayak/canoe dealer ($1.75) and place my broadheads as close together as possible in the center of the foam. This spreads the feathered ends of the arrows farther apart, thus eliminating the feathers from rubbing on each other.