You can't get a better router from Now, you will need to purchase your own. Both TP-Link and Asus have models with Now's (SKY) authentication method built in.
Alternative you could use a wireless access point to replace the poor Wi-Fi from the Now router.
Nope, I am new here. So, I don't have any other router with me.
But my friend is using BT internet and they provided a good router.
So its better to switch because I don't wanna spend in routers.