We have a Garmin C330 model and are happy with it. I use the British voice and call her Princess. We have run into two issues:
1. The unit is unable to store complete USdata sets. Crossing the Mississippi runs the map out. Naturally Garmin will sell you the other half of the US for a price. Most annoying, but I guess that is the state of the technology.
2. The GPS is not always right and is only as accurate as the data provided by the various jurisdictions. One must still use an old fashioned map and mark one eyeball.
Pat and Jim
Carman, Manitoba, Canada
2010 Cruiser CF30SK
2000 Ford F250 Triton V10
37 Yrs together, travelling with three cats