I like it. The only thing I wish it did was offer live feed from an app or cloud storage. Unfortunately, i would need to go with one of their other cameras to gain those features or even just a different brand. I’ve had no issues with my N4 and I have it set up pretty clean. I didnt go with the OBD hardwire connection for two reasons. (1) I don't Remember if that was an option at the time of purchase of my N4 and (2) I would rather not utilize so access could still be had if servicing is needed. The fuse option I felt was more ideal for how I wanted my setup to be. No unplugging needed unless it’s just that one fuse With problems. Just my opinion but when comparing the two sources of power, I’d assume that the OBD port would require more access than the fuse area.
At the end of the day, all comes down to personal preference really.