Differences in FS_*_1 and FS_*_2 ?

For my S-E W300i phone in particular,

how does W300_R9A036_FS_AMERICA_1_RED49
differ from W300_R9A036_FS_AMERICA_2_RED49
- and which is preferable?

(In New York, AT&T - if relevant)

Thanks.

It might be the language packs.

The difference is the supported languages.

AMERICA_1 = US English - Canadian French - Latin American Spanish
AMERICA_2 = US English - Brazilian Portuguese - Latin American Spanish
It depends on what languages you need to which one is preferred.

oh thank you very much.i understand it.