Consider the high-end smartphone. While you lust after those, Pantech is on the prowl, steadily adding to and improving upon its army of budget offerings in the US. It may not be as formidable a force as the Samsungs and Motorolas of the world, but the outfit is finally beginning to leave a mark. Once a complete unknown outside of Asia, the phone manufacturer is keeping itself incredibly busy on this side of the Pacific, cranking out low-cost devices for AT&T and Verizon. Now, Pantech's focus has turned to LTE, starting with the $50 Breakout on Big Red, followed by a