Firstly, the garlic fries, they're better than everyone says. For me, the garlic fries have a peak marginal utility of about three. Starting with about the fourth fry, the law of diminishing returns starts coming into play real quick. Sentimentally I have to go with Miller Park. I was at the very first game ever played at the Keg, the exhibition game against the White Sox. Took an hour redialing on the phone to get through to get tickets. I remember walking in through the gates by home plate and walking out to look at the field and just being mesmerized. It seemed like there was a little smoke or fog in the air that just made it seem surreal. After all the years at County Stadium, walking into MP I was just blown away. That, and being able to get brats and multiple varieties of Leinies. You don't know how much you love something until you can't get it anymore. And you don't realize how easy and cheap it is to get to/park by the stadium. Petco, Dodger Stadium, AT&T, Fenway... not so much. Oh yeah, and a lot of stadiums don't allow you to tailgate. None of the stadiums in CA allow it. Logically I'd go with Petco. The surrounding Gaslamp district is fun, and one of my favorite restaurants in the world is the Gaslamp Strip Clup (an upscale grill-your-own steakhouse, the name is a play on words from their signature cut of mean - the New York strip). The rooftop lounge at the top of the Marriott is always a good time. It can get a little hot on Sunday day games. Fenway is next. As someone else said, knowledgeable baseball fans and easy to talk to - they were in awe of my jersey. Not good food though. And the women... aren't pretty. SFO is nice for day games, but can get real chilly at night games even in the summer if the fog and wind pick up. And the food... see above.