Great choice. I've been drinking the Smuttynose Porter recently.
DUDE! Smuttynose Robust Porter is one of my favorite commercial brews ever! So tasty! nice hoppiness to it. very nice balance of hops and malts. nice chocolaty/nutty/mocha essence.
and the ABV% (only 5.7) isn't rediculously high like alot of imperial porters or 'holiday' brews, so you can have a few without stumbling