We loved net2 and found the paxton support team to be great.
A word of caution though, we did have one disastrous day where the door controller for the site team's office decided to stop letting anyone in at all. Unfortunately the breakers for distribution to each floor, and each area (including the one powering the door controller & maglock) were inside that office. The only PC on the management network was also inside that office (not that it would have helped, it stopped responding even to pings). We ended up having to kill the main incoming supply to the entire building, and then wait four and a bit hours (with no power) for the units battery backup to die. This was, of course, the day the DfE came to see the shiny new school they had built.
We VERY quickly moved the controller to a VM, put the system on our own network, reconfigured the IP addressing and wired up keyed external override to that office... And sacked the contractors off.
Since taking control over and doing it properly we had no issues at all, and we loved the system!