I agree with the idea that the experience matters just as much as the beer itself. After my freshman year of college, and drinking Milwaukee's best and keystone light all year, a friend of mine and I split a six pack of yuengling. I have had it since, and it tastes like a normal mass produced lager, but nothing will match those three beers I had back then.
Besides that, I really like the Back in Black IPA from 21st Amendment.
Primary: On the Fly RyePA
Secondary: Edwort's Apfelwein, Imperial IPA
In Bottles: Black IPA, Belgian Dark Strong
Planning: Brandon O's Graff, Java Stout