I need your help, tell me why you would by a 9720, BB Classic, Z3 etc.

Hello

I am writing a proposal for some retail chains in a market to take on the BB line and push it hard. I would like to get some real time feedback from the Crackberry nation. This market was historically a huge BB market, but has diminished along with the line. Since there is not much explanation of the new coming lineup in markets yet,nor do I expect much brand advertising here, I would like to ask a favor, if you would give me what is the strongest call to action to buy:

9720

BB Classic

Z3

Many thanks in advance!

the 9720 would be (i think) because of BIS.