I think it is important to know what you exactly need. (Do you wanna watch TV and record another program at the same time, do you need CI for scrambled channels... etc)
There is also a german part of the forum where you maybe find useful answers + can ask you questions in your native language: https://forum.team-mediaportal.com/categories/deutsches-mediaportal-forum.168/
Actually, I do not know, what I could get, I have any idea of it all, when I could do the same what I can do with a Video Recorder or a Hard Disk Recorder it would be okay, I assume.
Yes, I have seen the German forum, thanks for the link and help.
To be honest I don't know if there exists a USB dual tuner (which you need for recording + TV at the same time. - unless the programs you wanna record use the same transponder, if the programs use the same transponder you need only one tuner to watch and record; for example: RTL & VOX are on the same transponder so you can watch RTL and record VOX at the same time even if you got only one tuner)
Do you use DVB-C? If yes, which provider? (I have KabelBW)