Mobile navigation devices

Hello, this topic goes to all those who don’t have an integrated Volvonavi, but keep your navigator “mobile” because to use it in several vehicles. What experiences did you have with your navs like this? I got a Navi from Medion in 2005, which I would have liked to have scrapped several times in the last few months, since battery almost all and time again software and error messages. It had to listen recently often “This Sch….Navi”, however, was but not to “do” my “to do” the latest of TOMTOM GO 1005, and so far I’m very satisfied No comparison to Medion, very fast, immediately GPS reception, naturally easy operation, great clear display, constantly up-to-date live information, finally “freephone” for mobile phone or Blackberry and I’m already looking forward to the next further tour. Inspired by your experiences and recommendations Greeting Uwe