After the R1 arrived with a broken control panel face plate and non-functioning USB, I received replacement parts from Aillio. A quick switch out, and the R1 (coffee piggy) is roasting some mighty fine beans. The L1 is amazing. What would have just not worked before comes out really nicely on the Londinium. It does take some getting used to, but once learned, it is one fine machine. I am having more trouble getting the Compak E8 (w/ red speed burrs) dialed in. It is hard to believe that a 7 gr single shot is ground in under 2 seconds! 3+ secs for a regular double shot.