garmin comes with a built in maping system that is current ( has my apartments in it that are only a year old that mapquest doesnt even have) downloads/upgrades of maps are free with the system i purchased. i have friends that use the one on verizon but the draw back is when making a long trip and keeping it on there goes your battery..all in all i would say no matter what get a gps. any gps will do the job its how it works and the ease of use. it has saved me hours and jobs