Ron, on the TomTom I have the option of editing errors. (I can not put in new streets) but can correct for one way streets, change the name of streets, set blocks for one ways and dead ends and reroute. When on line I can upload these changes and download changes others have uploaded. (I guess some one could upload a mistake too) I was under the impression Garmin had this function also??
Locally (that's as far as I've been since I got it) it has all the streets (that the Garmin didn't have names for or recognize) It also doesn't Yap "Re Calculating" like the Garmin when you ignore an instruction (on purpose) , it just gives new directions to get you back on the right track to destination, I like that.
After the i5 experience I gave this one a real try out because I had the option of returning it for a full refund if not satisfied with it for the first week.
There was one glitch with it, it started turning itself on every two days, no map just a glowing screen. Although now I know it wasn't the unit itself but the updated application software I downloaded from the TT site. I contacted Tom Tom and they gave me a link to replace the software and it's been behaving ok since then. Funny thing though right after I installed the replacement software the site informed me there was a new up date for the soft ware. I thought to myself well I had enough of that already so declined the download.
Cheers
Willis