i run with triple sized baskets both at work and at home but i seldom extract more than 30ml for a 'regular' sized milk based coffee, as I want the natural sweetness that comes from a double ristretto based coffee Also this to me represents the perfect milk to coffee ratio, and adding more coffee produces a different result, not suited to my personal palate If a customer really wants a super strong coffee I'm more inclined to run two double shots on top of each other, but then I cut the pour short at 20mls ea or 40ml in total (slightly more for a larger or take away cup) But again my personal preference is to fine the grind and to updose the shot, and I use this as the basis for my espresso, double espresso, long black shots, etc - and I have a grinder set up specifically for this purpose in my cafe Cheers, ACg