I don't have any problems with the 5GHz band and my iPad Air so far, I'll let you know if it changes. As far as naming them the same thing, in theory you would hope that all your WiFi devices pick the best available band but that isn't always what happens. From what I've found if you want to make sure you are on the right band then keep them separate. If you just want internet, you can name them the same and not worry about it.