Go big (or local) or go home...
If you're buying commercial, grab a growler or a sixer from a local brewery/brewpub...
Don't have any close? I agree with Goose Island. Ooh, and Dogfish Head...
It may be expensive, but once you crack open a 90 Min IPA, India Brown Ale, Bourbon County Stout, or Pere Jacques, you'll be okay with it
I actually didn't like the 90 minute IPA, too fruity or something...just didn't like it. But Goose Island IPA is one solid beer, as is the honkers and 312. I'm sad they don't bottle the oatmeal stout anymore, I liked that beer alot. But they still have the Harvest ale in the autumn, might fine brew that is.
But I agree about buying local. Millstream is local, and they make some great beer. Iowa Pale Ale is great, as is their oatmeal stout and Schild Brau. They have a new beer now called Backroads Stout, which is their oatmeal stout recipe with more abv. Yum!