For what it's worth, I purchased a new Netgear N600 wireless dual-band router based on user ease-of-setup comments I found online. It's capable of HD streaming and works at 2.4 GHz and 5 GHz simultaneously.
I was able to set it up and get it working without calling technical assistance, using the supplied Netgear setup disc.) It's worked very well, and recovers its settings if you unplug it then plug it back in, which I did when I was away up at Axiom recently.
I paid about $70 for this router on sale at Staples.
Axiom Resident Expert