I shoot mostly concerts etc. Sometimes weddings. I shoot with my Nikon D300 for the most part. I've been bringing my D40 with me also to help cut down on the time I loose changing lenses. I shoot with(all f/2.8) 70-200mm 17-55mm 10.5 Fisheye What do you think I should have on each body. Obviously the fish eye in my pocket to exchange with one of the cameras.