I have used top of the line Nighthawks and a couple other brands. I just got frustrated with Comcast pointing fingers at the router or modem and got the Xfinity modem/router. When there is a problem... it is their problem.
In all of this swapping there was no effect in sound quality to my Aurender streamers. These streamers effectively isolate you from the network. Lessor quality streamers may not. I prefer to get an audio component that is not sensitive to the network instead of fiddling with the network.