PVR Clients - difference and epg-ninja compatibility

[Bestboy]

Hi ,
could someone please tell me whats the difference between the PVR Clients:

IPTV PVR Simple Client
Stalker Client
Stalker Client NFPS ?


As far as I know from reading here, those are not to be used at the same time as the IPTV Stalker Video Add-on because of authentication etc.

Is the Stalker Client NFPS working with the ********** Service and do I need both when using this client ? (or is the ninja.epg integrated - think I read this somewhere?)


Overall a possible setup for IPTV with EPG on Kodi would be:
IPTV PVR Simple Client OR Stalker Client AND ********** Updater (AND IPTV Stalker Video Addon disabled)

Thanks for your help!