Engadget introduces us to perhaps a smarter choice of cell phone - if youre a business man who does some serious business traveling - the Blackberry 8830 World Edition. It allows you to talk in more than 170 countries, and surf the web in more than 70. In what I think is a really sweet gesture, Sprint has included a SIM unlocked feature, which allows users to take advantage of local calling tarriffs by inserting local SIM cards.