In reply to HartlepoolGuy:
The Zealot might be a bit more durable but it is consequently heavier. The Superfly is lighter and will breathe much better becasue it is eVent. The main criteria I would go far are fit, and hood. Make sure the hoot fits over your helmet when you are wearing a pack and that the bottom doesn't rise up too much when you waggle your arma about above your head.
Macpac jackets tend to be a bit of a funny shape and don't fit everyone I reckon.