Want my user experience? Here's my crappy user experience.
Nokia Black rendered my phone completely useless. Any attempts at accessing apps leads me to a loading page, which works to get your hopes up, only to be redirected to the home screen. The phone no longer shuts off, hanging at either the "goodbye" screen or the swiped down lock screen. Forget about doing anything but staring at those useless live tiles (that never really updated correctly in the first place). Soft resets don't change anything. Factory resets don't fix the problem either.
At this point, I've transferred my SIM into a phone that works (ironically, a much, much older Nokia). Considering my options, which frankly, probably won't be including Windows Phone or Nokia.