ive never had a gps. im looking to purchase one. i am from oklahoma, a flat state, i moved to idaho 2 years ago. this is the first year i will go spike by myself. i will usually pay extra for the nicer equipment, but does the extra really pay with gps. im looking at the legend, vista, and rino 120. why should i or shouldnt i buy the vista versus the lower priced-thanks, mark