I have been using Microsoft Streets and Trips for about 5 years to plan my trips. I am interested in upgrading to the 2005 version with included GPS Locator. Is the upgrade worth the $125 price tag? I have used the 2003 program with an after market GPS but it only updates the program every 15 seconds, which is too slow in cities. Does the newer program work faster? I have more questions but will save them for later.