Data cards, while not as completely thrilling as new handsets -- or as pretty -- are quickly becoming true workhorses for the mobile-connected masses. Sierra
's 598U on Sprint
's is no exception -- or slouch -- with EV-DO connectivity, an SD Slot to add up to 32GB of storage, GPS, and even the ability to install the drivers for both Windows and Macintosh without having to carry a CD. Top shelf bit of kit and the pricing is as good starting at $free on a 2-year deal after "instant savings" of -$199.99 and a "web special" -$50 discount.