Attention, bargain shoppers. Lowrance Electronics is adding a new, budget-friendly model to its iWay series of portable navigation systems: the iWay 250c. It will feature a 3.5-inch touch screen and come preinstalled with maps of North America. Also, like many of the GPS devices coming out these days, the system rocks some multimedia features, including an MP3 player and a JPEG picture viewer. The Lowrance iWay 250c is expected to drop this fall for $349. We'll update you as we get specific release dates; in the meantime, you can check out our reviews of theand the .