Looking for routers compatible only to coax ont for verizon fios.

Since Verizon Fios uses a 100% fiber-optic network, the service does not use modems. Instead, it uses an Optical Network Terminal (ONT), which is essentially the fiber-optic version of a modem. So you can’t use your own modem with Verizon Fios, but you can use your own router.

For routers, I'm partial to the ASUS RT-AC66U B1. I think it's a great price for the performance, with great signal strength. It also has AiMesh support, allowing it to connect to other AiMesh compatible routers to be used as an access point.