Good router for everyday use?

Currently, I'm looking at the Asus RT-AC1200, which is on sale for about $70 USD. Is this a good router for my use case: ~5 devices simultaneously with light streaming and web browsing.

We don't use any fancy features.

I currently have a D-Link AC1900 but it is not working. My internet is fine without the router (directly connected to modem), but with it the internet is slow/sometimes some sites don't work. It's 2 years old. I've tried power cycling the modem/router, doing factory resets on the modem and router.