I was going to suggest ASUS RT-AC68U to a friend to use with Tomato, but after a few searches I would say there's only a tiny chance he will actually get one that's compatible. Or am I missing something here. I assume RT-AC68U A1 is the original and the one compatible. There's AC68U A1, AC68U A2, AC68U B1, AC68U C1, AC68UF, AC68P, don't know if there's even more. ASUS definitely gone mad with this one. Any of theese compatible?