From Baseball America (via the Dayton Dragons):

Ballpark Club Classification
1. Autozone Park (Memphis, Tennessee) Memphis Redbirds AAA
2. The Dell Diamond (Round Rock, Texas) Round Rock Express AAA
3. FirstEnergy Stadium (Reading, Pennsylvania) Reading Phillies AA
4. Fifth Third Field (Toledo, Ohio) Toledo Mud Hens AAA
5. Dr. Pepper Ballpark (Frisco, Texas) Frisco RoughRiders AA
6. Whataburger Field (Corpus Christi, Texas) Corpus Christi Hooks AA
7. Fifth Third Field (Dayton, Ohio) Dayton Dragons A
8. NewBridge Bank Park (Greensboro, North Carolina) Greensboro Grasshoppers A
9. Louisville Slugger Field (Louisville, Kentucky) Louisville Bats AAA
10. Brighthouse Field (Clearwater, Florida) Clearwater Threshers A

Two of their affiliates in the top 10 and the highest rated A team, pretty impressive.