We evaluated NUUO Titan for a project with 48 2MP IP cameras. Findings below:
1. System is very feature rich, and everything works.
2. The CPU usage is very high compared to Milestone, Luxriot and HD Witness. In fact - it was about 5X higher then the others (which were all fairly low and close). Most annoyingly - the CPU usage DOES NOT go down when closing the live view window, turning off the software motion detection and video analytic features - very strange. With the other 3 VMS a single i7 did fine, with NUUO Titan we had to move to a server with Dual Xeon 6 Core CPUs (thats 12 Cores total!) to avoid CPU usage going above 70%.
3. We did not like the "DVR like" thick UI bars - but thats a personal opinion.
We abandoned NUUO and moved to Luxriot due to a) the CPU usage, and b) the license cost (for this particular project NUUO's additional analytics features were not needed - Luxriot does not have VCA features apart from deeply integrating with UDP VCA based cameras and encoders).
Which cameras are you using? If your cameras are supported there is really not much out there that is more user friendly/scalable then HD Witness or more affordable then Luxriot.
For close competitors with Australia support presence have a look at ExacqVision (various distributors), HD Witness (AFN Security in NSW), Digifort (EOS in NSW) and Luxriot (Computer Support Services in VIC and TruHD in NSW)