#1. "RE: Bibble, ACR or NC" In response to Reply # 0
Each has their advantages. Really, it comes down to a personal preference. Adobe Camera Raw is definitely the most straightforward to use as it is integrated with Photoshop, some people prefer the others. You can download a trial of most conversion programs so give 'em a try and see what you think.
I use ACR for most images, but do have a current license for Nikon Capture and utilize it on ocassion for "problem" images. I haven't upgraded my Bibble license to their new version and may not since I probably don't really need all three. I got Bibble back when there was no ACR and Nikon Capture was nowhere near as good as it is now (and cost more than it does now too).
By the way, don't leave out Capture One DSLR LE from Phase One.
#3. "RE: Bibble, ACR or NC" In response to Reply # 2
I did the trials on all available RAW converters and bought NC. It gives at least as good of control IMHO as the others, and better for some aspects. Plus you get camera control and custom curves capability. It integrates nicely with NV, and I find I only use a more sophisticated editing program for 1 out of 100 images when I need to clone out something, free rotate to straighten a shot, or use layers.