[LeonM]

Well, in my case, I use a Edgerouter-X with an SFP module that connects directly to my fiber line. Remember, a fibre lines does not even require a modem. I don't have experience with DSL equipment. The equipment my ISP send me (it's still in the box) came with a 'fiber modem', which is a fiber-to-ethernet converter, and a no-name brand router with build-in wifi. The firmware on it is a custom branded build of 3 years old, and I don't expect they ever released a security update for it (KRACK attack, anyone?).

For wireless connectivity I use a Unify AC pro, which has proved highly reliable. See [0]

[0] https://arstechnica.com/gadgets/2015/10/review-ubiquiti-unif...