We have a very similar approach. There are about twenty or so wines that we buy regularly, although that list changes as the vintages improve or decline. We do take some risks, some of which work and some that don't.Every month my wife puts a certain amount of money into a Naked Wines account which accumulates. We can either get a case of vinegary piss every month or save up and get something drinkable every quarter. After a few false starts, we have worked out what we like and order accordingly.