I am planning to buy a second generation iPad Mini with cellular service. Currently I am using a first generation iPad Mini with AT&T's 2GB for $25, but one of the drawbacks is that I cannot use the Wifi hotspot feature. As a result, I am considering switching to Verizon, but I am unsure if it is worth paying more for the same amount of data (2GB for $30). Both companies have good coverage in my area. Which company should I choose?