Re: Best MLB Stadiums
While I've only been to a few other major league parks, I think GABP is a good, but not great park. Food selection is great with (overpriced) Skyline, Penn Station, Food network, and Smokehouse BBQ. I actually think the smokehouse is the best deal in the park - $12-15 gets you smoked meat with two sides (and the macaroni and baked beans are both good). It's not cheap, but when you're paying $5+ for a hot dog, I think that's a pretty reasonable price.
Beer selection (behind 3rd base line - home run stand or something?) is great for any major event. They're got a bunch of micro stuff including several locals with Madtree (one of my favorite local breweries). Plus, it's about the same price as the macro beers ($8.75 for a 20 oz. Oberon vs. $8.25 for a 16 oz Bud Light from the walk around vendors). You can also take in your own food - great for season ticket holders or those that can't afford (or refuse to pay for) the overpriced food at the park.
Site lines are good, but you can't see left field from the bleacher seats. I personally think the Moon/Sun deck seats are the best place to sit since you never have people walking in front of you and they're reasonably priced. I also like the World series banners, the HOF numbers, and the riverboat/smokestacks (in concept more than execution). The bronze players out front, the Reds HOF immediately adjacent, and the murals in the stadium make this a pretty decent place to take in a game and consider the history of the team (without being over the top and in your face).
Anyway, I've had a great time at games here in the past few years (more so than when the park first opened) and I continue to hope for stadium improvements. I like the idea of doing something with the turf patch in center field.