I've been alternating which roaster I use: one week I'll use the Sonofresco and the next I'll use the UFO/CO. Two weeks ago I did a batch of Ethiopian IMV & Guat COE in the Sono, a full 20 seconds into 2nd crack (I wanted a very dark Vienna for espresso/cappuccino, which I believe needs a very strong/dark roast). It was great in the cup, making some fantastic milk based drinks (no sweetener or flavorings - just a straight forward Italian cap).
This week I'm drinking the same blend, this time done with my UFO/CO. Again, I took it 20 seconds into 2nd crack, but this time I dropped the temp when 1st crack began slowing down - stretching the time between 1st & 2nd crack. The difference was pronounced - I could taste more caramel and citrus in the coffee and the mouth feel was rounder, more balanced.
It's difficult to beat the convenience of my Sonofresco - it's a load & roast machine - no nuances to the roasts that're not present in every roast. It's the ultimate in small batch production roasters where you just want a coffee the customer will like. I've sold coffee at 3 craft fairs/farmers markets and everyone has loved my coffee.
The problem is, I drink more of my coffee than I sell and I'm getting to be very persnickety about my coffee. I like playing with the roast - adding time here, reducing time there; trying to find the best taste in my cup. That's where the Sono comes up short!