SirHumphreyAppleby: Been looking at the Dahua equipment some more, and it looks like it is quite reasonably priced, compared to going down the Synology NAS route. Roughly the same price as a cheap NAS for the 8-port version sans PoE, without the need to buy extra camera licences.
Were you able to find any videos or demos of the Dahua NVR4104-P interface before purchasing?
Some of the software out there is tricky to use, and not cheap, but it is also has numerous features which have always put me off looking at hardware solutions which seemed quite limited in comparison. I am assuming the Dahua offers a Web-based and possibly app-based interface, but I'd like to know what I can do with the equipment.
The other obvious question is, what is the video quality like? Any chance you could post some sample videos?
I've installed a lot of Dahua kit and can vouch for a) the picture quality and b) the quality of the NVRs
The best management tool for playback if you're going to use a NVR is still to use PSS, it makes like a lot easier.
If you want samples of video look no further than YouTube which has heaps, or if you're after general IP stuff there are numerous sites including networkcameracritic that has some great review. Google is your friend.