I find a bigger issue with the fact that every TomTom we have sold the last 1-2 years has been returned because they suddenly stop receiving satellite signals untill we download an update. Which is absolutely ridiculous. There is no good reason a gps should suddenly not find satellites because you haven't updated the firmware in the last few months. Especially when it happens when you are on a vacation and are about to head back.
I wouldn't bother them to send me a replacement because I don't want a replacement device goes dead on me again... so I get something else instead of Mio.. My brother had Mio as well but it went dead on him too... He got a Garmin instead.