Well, I took a short look at the New Interchange series, and from what I can see, this is American-English. :) I guess you guys in Latin America and in Thailand are more exposed to American-English so this makes some sense.
But here in Europe it would be a bit weird to teach students American-English :) so I guess I`ll skip New Interchange, although it does look realy interesting...
What do you think of Face2face ??? I would post a link but I don`t have 5 posts
Sorry! Never used face2face...so can't give you any definite feedback on the material...good or bad. ;)
But hopefully someone else here in the forum can fill you in on the material.