<I am thinking about getting the N90s battery grip, primarily for the button to ease shooting verticals. Any opinions on it? What is the model name and what is it going for? Thanks!> It's the MB-10. See http://www.bhphotovideo.com/photo/35mm/nikon/power.html for prices regards, Henry Posner/B&H Photo-Video http://www.bhphotovideo.com