Steve
Mostly Harmless
I've been mixing it up with a few different suppliers; some local, others interstate. But ICT (International Coffee Traders up in Queensland) have incredible greens on offer so I've gone with them a few times.
I've not yet ventured into the really top tier greens yet (eg Geishas), too nervous to stuff up roasts with them haha. One day!
another one I'm interested to try is a Jamaican Blue Mountain... runs about $30/lbs unroasted, which is about what the Kona beans cost. Most of what I roast tends to be in the $5 to $7/lbs range.