I've roasted coffee for years and have not purchased anything but green beans for well over 6 months. Tastes great! Decide what roast you like and then run with it. I experimented for years with varying roasts and finally determined we like Vienna best. I take it to 465F and then kill the heat and cool to at least 220F with spritzes of water. Then I let it cool the rest of the way, package in a bag which allows the gases to escape and then grind when I need more java.