If you want to try a beer where the apply brandy character is REALLY front and center, you should try to get your hands on Captain Lawrence Golden Delicious or Voodoo Apple Brandy Gran Met. They are both tripels aged in apple brandy barrels. I believe that Golden Delicious is a seasonal release and comes around at least somewhat often. AB Gran Met has only been released twice (a few hundred bottles or so each time) at Barrel Room releases, so it may be a little tough to get, but it's hardly the most sought after Voodoo BA beer, so I have to think you may be able to get your hands on one.
As a disclaimer, I am a big fan of both of these beers, but friends who shared them with me didn't necessarily share my enthusiasm.