I like both fine. I was introduced to NZBs via Newsbin Pro (which, yes, I paid for). But all the higher level managers like couchpotato and nzbdrone seem to use anything except Newsbin Pro. I personally use SABnzbd with couchpotato and nzbdrone. Is it a matter of not taking a dependence on paid software that a downloader like Newsbin Pro isn’t supported? More curious than anything.
Its because SABnzbd has a great API to interface with, while many other applications, such as Newsbin do not. We’d likely dd support if it was easy to do so and if the demand was high enough, but unfortunately its not very easy with Newzbin, as stated by kayone in this thread: http://forums.nzbdrone.com/discussion/56/calling-all-blackhole-users
You could use the “blackhole” to drop nzbs in a folder and have Newsbin pick them up, but this would be less integrated with NzbDrone (as we’re looking at supporting SABnzbd even more).