Is there any advantage to either phones for importing/exporting files and using as a gps. Oh and downloading map sections. I currently have a 3gs and im looking to upgrade to one of these phones here soon. I currently take gpx files and convert them and make them a trail on everytrail then get it on the everytrail map on the phone. That works until out of service. My 3gs is locking up quiet a bit and im afraid if i try to update it to ios 6 it might crash for good. Anyway any suggestions or preferences on which phone to get?