I just looked at Django and unfortunately those beans were not on sale. Saying that, over the past 5 years!!!!!! with the Niche, I’ve ground pretty much all sorts through, and it never ever skipped a beat. I mainly drink light roasted coffee, and have definitely ground some pretty hard stuff there, like some Costa Rican SHB (Strictly Hard Bean). Saying that, I’ve heard a few other people complaining of the grinder stalling. One person in particular at the time reported the issue to Niche. The motor was replaced and the problem went away.