Photomechanic was strongly influenced by the needs of pro PJ's that need to turn big piles of images on a deadline. All those speed and efficiency benefits trickle down to all the other users (like me).
It is a great match for CaptureNX2 because it allows you to effectively shoot raw and JPG without actually dealing with duplicate JPG files.
The Save As... operation, with all the attendant options, make final output a breeze. Select images, click save as, set the output size, add watermarking, and it's done- fast. The watermarking alone is worth the price of admission of you watermark a lot of your images. I can't imagine giving up that Save as operation.
While most browsers deal with metadata changes, the PM IPTC stationary pad is the best implementation, by far, that I've ever seen.
Even where many feature bullet lists might appear comparable, PM always does it faster, better and easier.
It is heavily user configurable to deal with many different metadata strategies. This can be critical when trying to get a catalog app like iMatch to work smoothly and properly read all the metadata. ViewNX2 cannot create sidecar files, for example, and sometimes that can be important.
ViewNX2 has come along way since the original View browser. Many of us started with PM many years ago when the additional features were even more numerous and obvious than they are now. But ViewNX2 will never be a PM, because...
Camerabits is the Perfect Storm of a Software company. A small tight proficient staff that really cares about the needs of their customers, and not just what *they* think it should do, and can turn out critical fixes in a hurry (often in days or less when needed).
The state of PM is the result of the developers working closely with users on their forum (and privately), and actually following through. Most of the old timers have probably had at least one fix or enhancement implemented. But they are bigger than a one man band with the attendant risks and problems that come with that.
They are the best software vendor I've ever dealt with and I've been a software developer for most of my 30+ year career. It is difficult to pay serious money for what is otherwise available "for free". But once you've tasted Photomechanic it is hard to walk away from it.