BKK2 on 16 July 2008
PS3 hasn't been launched in Brazil, so I'd guess the imports there are NA consoles.
Basically the difference is 80Gb has BC, 2 extra USB ports, and 3 extra memory card ports.
40Gb has 65nm Cell Processor compared to the 90nm in the 80Gb. This basically means the 40Gb draws less power and runs cooler than the 80Gb, which could be a benefit if you're in Brazil. Due to less cooling requirements 40Gb is also lighter than 80Gb.
