C&D seems to be one of those "Sinatra or Dean" situations. People either like or detest them. For myself, I cut my teeth on the Old London series, and love a few blends like 5 O'Clock Shadow, OJK, and BMF. Some of their blends are really meh for me though. As to QC, I've been lucky. Only issues I've had is with quick ferments, with tins darn near exploding. Nothing that a mason jar can't fix.