I am using a AHD dvr with some analogue cameras and a AHD 1080p bullet. The advantages I've found , besides what has been mentioned by others , is that I can split the signal from 1 camera into two channels and set each channel up with different parameters. The cameras would be very expensive to replace with IP at the moment.
The lower resolution not such an issue for the situation. It would be nice to replace with some AHD 1080p pinholes. Has anyone done this and where would be a good , reliable, safe source, retailers they could suggest. Would all AHD pinholes be compatible? With any AHD recorder or issues of compatibility with country of origin, US, China,English?. To go the IP way would be expensive, and can can't split them, unless someone knows how. Need to get good ID images under hoodies, hats etc so 1080p would be great.
Using 960h, AHD and IP. Nothing like diversity.