Been to many, hope to get to them all. Everyone, of course, will have different rankings. My bias is showing, but how Dodger stadium can rank that high is beyond me. It's a dump in my opinion. Has been showing it's age for the last 20 years.
PNC is fabulous. KC, actually I would put in top 5. Love Petco as well. He definitely has the last 3 correct, at least based on my visits there.
I haven't been to many (just 2 Brewers, White Sox, old Twins, Reds, Braves, and Astros I believe), so I couldn't really tell you if Minute Maid is overrated or Miller Park is underrated, but there's no way you put Minute Maid 8 spots above Miller. They're the same ballpark and everything he knocks Miller Park for can be said exactly for Minute Maid. I'd even say I think more highly of Miller just because there is more to do, both inside and outside the park. Inside you have an area for younger kids to play around at in Miller Park and you have TGI Friday's. Outside obviously tons of parking to tailgate. Plus there's seating around the entire park and the seats actually angle towards home plate. Minute Maid outside you have a giant convention center and just city streets around it. Inside there's really nothing besides 1 bar on the opposite side of the main hallway from the field and the fan shop. Plus it's a baseball field built into a rectangular building, so there is no seating from CF to LF minus a few rows where they made a 320 foot wall straight down left. It's a building that a football field would be better suited for. Also, I was sitting between 1B and RF and the seats were not angled towards home plate at all. If I looked straight forward I was looking square at the LF wall. Had to either sit on the edge of your seat or crank your neck the whole game to watch the actual game. And the only reason he can come up with for Miller Park not being as good as lost of the others in the league holds exactly true for Minute Maid: there is absolutely no background scenery to be seen from inside the park whatsoever.
I pretty much disagree with everything the guy wrote about Minute Maid especially when I compare it to Miller. He says it's especially nice when the roof is open at Minute Maid. That was the best thing they had going for them (well, that and the open seating policy...get tickets for $10 from a scalper and sit 5th row, not bad, and they proudly advertise that). Thought it was amazing that the air conditioned that thing. No warmer than 70 degrees in there and it was 90 degrees outside when we went. That was the 1 big plus about that stadium, in my opinion.