kaetho I have both, TV-Box and two Apple TVs and couple of Fire TVs. I use all 3 and actually slightly prefer the TV-Box over Apple TV. This us mainly due to remote experience and I do have the Swisscom remote for ATV.
It might be about the WLAN-Box, but underlining issue is making blue TV work. With ATV the issue might not exist. To translate that into my wisdom, if you have cheese use it and just call it cake.
I use all devices hard wired, but I also have 2 WLAN-Boxes. The discussion yesterday was very useful. I learned something and was able to verify that in practice. I wouldn’t have recommended Apple TV if it wasn’t for the tests I did yesterday. Not relying on multicast is an advantage over WiFi.
One thing to also bear in mind is that Apple TV probably has superior performance over WiFi compared to TV-Box. I use conditional intentionally as I don’t have hard facts to back this claim, but Apple is very good at these things and it is a much more expensive device.