EXTREME caution is required when attempting to get miles with balance transfers since there are several ways hefty fees are hidden in various offers.
For example: a cash advance charge of 3-5% may be applied, hidden in very tiny print, or, perhaps, not even revealed in the offer.
IMHO, the balance transfer thing is no longer such a good idea. @:-) I don't do it and maybe you shouldn't either.
Now, coins from the Mint. I love that.