I've just ordered two Amplifi HD routers to sort out the wifi coverage in my house. Currently have the EE Brightbox 2 and the wifi drop off is abysmal - on the second / third floor I'm lucky to get 1mb down.
I also have an IP phone for work, which is connected via powerline adapter on the third floor. It regularly cuts out and requires the plugs & BB rebooting. I'm hoping with the second router set up in bridging mode, I'll be able to connect directly to one of the ethernet ports and finally have a stable environment.
It's quite sad how excited I am about these cubes. Let's hope they live up to expectations!