But we found out how to check our PSN on our PS3s and under Account Management it says Country/Region: United States. It even has Guam under State/Province, right between American Samoa and Northern Mariana Islands. Are you telling me the model number trumps that?
No I misread my info. Sorry. You do infact have a US region PS3.
Bsed on this new information your selection of "Americas" seems to be right.
One last question. When you buy DLC and stuff you use the PSN US store correct?