Compare 3100 vs S30 3D

There is certainly no shortage of car Sat Nav products ranging in price from £70 to £400, from relatively simple to extremely sophisticated.
Consequently I thought it might be helpful to compare a couple of lower-priced models, the Magellan Maestro 3100, and the Navman S30 3-D.
In some respects they are both quite similar, they both have [...]