Bought an MB-D10 this afternoon. The feel is good and the fit seems to be A LOT better than any of the Canon grips I've gotten previously. however, I felt the joy pad is pretty redundant since the rear panel does not switch to portrait orientation when I use the grip. I end up using the joy pad on the body to access to the menus. It could be my problem but I find the joy pad on the grip an extremely painful to use. The top key almost never work. Whenever I try to press it, I end up pressing the centre portion instead, selecting the item on the menu instead of scrolling to the one above. Using a D3 as well so my other rant is that Nikon did not include the adaptor for EN-EL4a while 3rd party grips do. If you are one who is sensitive to built quality, go for the original, if not, I think 3rd party ones should work as well.