I don't have any special knowledge of any of these languages, but the full version of Monkey costs $120. If you are willing to spend that much, then you might want to first look at a more mature competitor, NS Basic, which has been around, in one form or another, since 1998, and which costs about the same as Monkey. I'm not sure what all of the differences and similarities are, but I notice that they released an update to their "NS Basic/App Studio" today.
