Advantages:
+ Solid construction
+ Magnesium alloy
+ Rich weight
+ 6 AAs (Eneloops course, what else) can be equipped or with the EN-EL 15
+ Vertical shutter with good tactile feedback (formerly of the MB-D10 very "nervous" in the D300)
+ Free choice of the discharge order
+ The camera's battery can stay inside
+ Minimal conversion expense (rubber flap of connections takes place under control)
+ Fits perfectly under the Body
Disadvantages:
- Something fummeliges and small directional pad,
- No on / off switch on the handle for the entire camera, but only if the handle must not trigger or not
- At the D600 no increase shooting speed
Neutral:
o price. I see at least not so tight.
o some play between the handle and body in the right margin of the combination. But does not interfere