Yeah, Init7 suggest ASUS routers (which is why I originally wanted the RT-AC87U). But after reading that people were frustrated with the 5Ghz network and even returning the router, I decided to go for the Netgear R8000 instead.

Everything works great, stable and without troubles so far. But on the other hand, "only" with ipv4.

Guess I'm gonna ask in the Netgear forum for help and otherwise flash the DD-WRT firmware next week and see how it performs...