some will buy from exchanges (SecondMarket) if that's the cheapest least dodgy source.
FTFY
The currently least dodgy source that scales to the demands of our wealthy imaginary coinnoisseur, by all stretches of my imagination, is a sufficiently large mining operation.
It's the wealthy, imaginary non-coinnoisseur who nonetheless follows the advice of his financial advisors that will have to wait for more reputable venues to emerge that don't rely on direct contact with miners. I don't know where the 'about 1 year' figure comes from that I keep hearing. Is there any substance to it?