If restricted to the chamberings listed above, I would go for the 470, without a doubt!

However, if allowed to expand on that list a little, I, like Igwe, and NE450No2, I would go for the 450/400 3" or 3 1/4" NE over any of them! Though I love the 500NE, it is too specialized,and the 470NE isn't much better suited to multi use! The 450/400 is very well balanced to many types of hunting, and can be made light enough to handle like part of one's body,is capable of handleing anything that comes your way, and you can carry it all day without tireing!