I have gone through 3 of these - gave away two, kept the first one for posterity... A Poppery 1 is much better. You can do well with a FR8+ if you split wire it and use a variac to control the heat. Otherwise the first and second cracks will overlap. If you like charbux-style coffee, it works great right out of the box - you can go from green to French in about 6 minutes and the beans don't get properly dried so there is a lot of extra hydrolysis and creation of tannins. Another option for an improved profile is to roast with a much smaller batch than recommended, to reduce bean-to-bean contact and increase the amount of time to roast - about 50g seems to work well if you have the internal potentiometer that controls the fan at full bore.