Schlafly Reserve is really, really smooth and yummy. The oak comes through well.
Old Fog Horn is, I think, a really solid barleywine, quintessential - it seems readily available so I pick some up occasionally and hold onto a bottle or two but drink up the rest
Old Ruffian is fantastic
Bigfoot is too hoppy if you get it when if first comes out, definitely one to age for a while.
Really Old Brown Dog is also pretty solid