Ok I gave it the good old try. Ran NextPVR / Kodi for a week, week and a half. Just wasnt stable enough for me. If Kodi wasnt dropping channels, NPVR was crashing and round and round. Plus it had a habit of freezing up live TV randomly requiring a reboot of Kodi, sometimes the system. Could never get the Aussie IPTV stuff to work with NextPVR either, worked fine if loaded directly into Kodi, just not npvr. Playback of recordings was very troublesome as well for some reason. To the point where I was going to do a reinstall but then decided nah, bugger it.
The good thing was I got my remotes to work with Kodi perfectly - I ditched my old Harmony 880 and setup a new Harmony 650 - what a friggin battery hog of a device! I got Kodi working perfectly in my room with my Harmony Ultimate One as well. The 650 actually is nicer for it. I tend to use yatse to control everything other than turning the system on.
So the main computer in the lounge is back to running MP 2.11 again. It just runs flawlessly, if a little boring. Id love the ability to use iptv etc on it but oh well, its not a game changer. Recording just works, live tv just works. Only downside is still power management. Its just plain sucks and doesnt work. The picture is a crapload more stable than MP1 though.
Its not worth it to me to spend money on Emby/Plex at this stage. If they really wanted my money give me a free trial and let me see if it meets my needs.