Well, in West-Central MN, NB and Midwest are my closest options for a full-service brewshop, so they've always been my go-to suppliers. I typically make a couple trips to the cities each year to visit my sisters, and make it a point to hit the brewshop for about 6 months worth of batches. They've always served me well.
My mom is down there this weekend and so I'm having her pick me up some S-189 and Cotes des Blanc yeast for some cider. I guess that as long as I can get the vast selection of supplies and ingredients that I need for decent prices and excellent customer service, I'll keep shopping with these guys. I don't spend a damn cent on BMC beer, and I stretch my brewing penny as far as I can too, so I guess my buying power won't make or break InBev.
This has been an interesting thread to read, for sure. The market research aspect is kind of crazy to think about. You fellas think of all the angles.