i have q6600+MSI G31m3_F V2 mobo. selling for 150.
q6600 G0 stepping. use in moderation for about 1 year, i overclock when i do benchmark which mean it's hardly ever been overclock. other than that i leave it at stock.
mobo is mint condition. it's was purchase on Oct 10, 2009 which was less than a week. i still have receipt from fry's 15 days warranty.