I'm considering buying an iPhone. Seems like the main difference for me between buying from Maxis/buying an SG unlocked set is whether or not I want to sign up for the "free" 500mb data transfer per month plan, vs sticking to hotlink.

Does "regular" iPhone usage really incur that much data transfer? If yes, then it might make more sense to sign up for the plan, cos hotlink data charges are quite ... retardedly high.