If you're thinking about change router, you should consider buying one that is compatible with VPN services. Thus, you can centrally configure the VPN service on it and all the devices you connect to your WiFi network (Smart TV, PC, mobile devices, IoT,...) will be protected. Of course, with the new routers you can also get better speeds and more coverage if you choose the right one.
In general, most people are happy with the one provided by their Internet service provider, but these are usually very basic, and some come with a default configuration that you may not be interested in. In this article you will know everything you need to choose VPN router and you will also see some recommended models.