Well, I've just gotten back from a weekend in Belgium and I made it my personal mission to try as many beers as possible (within reason). Personal faves were Westmalle Dubbel, Orval (both proper Trappist stuff) and Brugge Blond. I had a night in Brussels and two in Bruges. I preferred the latter which is in the Flemish part of Belgium. You feel (perhaps unsurprisingly) like you're in Holland. Those Trappist Monks know a thing or two.