That's what I did... and good news is ..they finally provide 10% discount to me, after order 40 units.
And they promised if new controller on stock, I can change old beta one with new one.
Gray
Great news!
I was also wondering, do you mine on a coin-switching pool like multipool.us, so that you automatically mine the most profitable one? It would be a lot easier than manually monitoring switching all the miners to a new coin.