The BlackBerry Storm 2 should finally appear this week and represent RIM's best hope for challenging the iPhone, leaks claim today. British newspaper The Guardian states as a matter of fact that the touchscreen BlackBerry is due to launch this week first through Vodafone as the 9520 and that it will be priced with a plan inexpensive enough to lure iPhone users, as it will only need a £30 ($47) monthly plan to use versus £34 ($54) for Apple's handsets.