I'm planning my next purchases, but there's so much choice. Do I save up for something big? Buy as many little sets as possible, going for quantity over quality? Follow a few sub-groups I've already started? Get the other versions of the vehicles I already have? Get the rest of the kits containing the minifigs I already have? Get the newest stuff? Get the oldest stuff still in the stores? Go bargain hunting? Trawl the Marketplace? Or just write all the names on Post-it notes and pull something out of a hat?
What do you think? What's your buying strategy? Any buying anecdotes?