I just completed installation of my new Asus RT-AC56U AC1200 router. After failing to get my old Airport Express to work consistently with all my devices after what feels like 100 configuration cycles, I now finally have spectacular network speeds all over the house. Transferring all my existing network devices to the new router was a cinch, and setting up the router was even easier. Everything works perfectly out of the box!
The current generation Airport Express is a fabulous device, but it fails miserably as soon as it encounters the demands that three remote Airplay speakers put on it.
The best part about this Asus router is that by plugging in a 3G/4G USB cellular hotspot, like this one from Verizon or this one from AT&T, the home network can get routed through the cellular network, should Charter decide to raise their prices again.