I'd like to add my hat into the ring on this one.
I'm currently set at Marble and Oil, but can change to anything, as needed.
If I go to Aluminum and Coal, one of my trades has been wanting a more steady circle and he has Aluminum and Coal set right now.
Ezko of Ezko, also of the Realm of the Rose.
http://www.cybernations.net/nation_drill_display.asp?Nation_ID=3144