I've had my example of this TC for quite awhile, and use it a lot, but forgot to review it. Well, here it is. If you have an 80-400 f/4.5-5.6G AF-S VR, as I do, this TC soon becomes almost indispensable.
Sharp; handy; easy to forget it's attached
AF is a bit slower; and the TC doesn't attach to most Nikon lenses