Follow up:
Having the impact more Weaver rails, and been shorter than the crown, for me is the perfect airgun for hunting. Specially at night. I am not really into aftermarket parts (Changing grips, colours, etc) actually I have not change a thing (I like it the way it is), but since my hunting is mainly @ night I need a torch light attached to the impact (I try head torches...is a pain! it must be in the gun), and also need a laser beam for short and fast shooting (2 to 15 meters range, usually rats in trees or rabbits too close to aim with the scope), and if you add an extra magazine holder, I have all the rails in use. So, for me and for night Hunting the Impact is more practical. That is why is important to consider the main use for your airgun. (you can add those to the Crown of course, but drilling that beautiful stock..donno)