>>639744Buy anything that isn't on this list:
https://wikidevi.com/wiki/Intel/Intel_Puma#DevicesWould not recommend TP-Link either.
If you get a modem only (not a gateway, those are modem/router combos) you will still need a router to go with it. Get a T-Mobile Personal Cellspot (actually just a rebranded Asus AC-68U) for cheap and flash it back into a $150 AC-68U for free:
https://blog.silocitylabs.com/post/2018/01/01/flashing-merlin-to-tm-ac1900-or-ac68u/comment-page-1/It's fine to buy used routers (because the MAC isn't exposed to the ISP) but don't buy used modems. It may still be registered to someone else and that person will have to call and ask for it to be removed before your ISP will let you use it, meaning you're stuck with a brick. I know Cuckcast does this.