I prefer the Harpoon tour to Sam Adams. At Sam Adams, they choose three beers for you to try, and one is Boston Lager, which I think most people tried. Only one of the beers we tried was new to me. I wish I had a chance to try some of their more limited edition beers that I don't see in bars all the time. At Harpoon, you have 20 minutes to try whatever is on tap, so it's a better opportunity to try new things (100 barrel series, seasonals).