I'm helping a friend with his setup. He currently has a bunch (14 currently hooked up) of Axis PoE cams, which are decent enough, but his NVR (rebranded Hikvision) is garbage (doesn't update well, viewing app rarely works, constantly needs to be rebooted, etc.). He's not a very tech savvy guy, so I want to keep it as simple as possible, to prevent constant calls to me to fix stuff. I believe all his current cams are Onvif, so I'm looking for recommendations for a reliable and easy to use NVR/App. I thought about just starting over with something like an Armcrest or Lorex system, but his current Axis cams aren't bad. Can anyone recommend and NVR/App that might work well? I am willing to replace the whole system if that might be an easier route. At this point I prefer easy and reliable over cost.