You only have to look at the absence of Bluetooth and WiFi support to see that the n35 is a navigation device first and a handheld second.

The R600 is a solid, but not outstanding GPS unit. Its large display and simple user interface are positives, but the large, bulky size, combined with a lack of text-to-speech technology are downsides.

The S102 comes at a good price, but although the navigational experience was solid, it just doesn't do enough to command a glowing rapport. There are plenty of better options available on the market.

The AVN2210p is far from perfect, but it's a nice example of what can be achieved by combining personal navigation and in-car entertainment. It's a very solid unit with a couple of nifty features and the fact that the GPS unit is detachable will be a selling point for many consumers – not to mention its very reasonable asking price.

Although the GPS 60 looks like it means business, it doesn’t live up to expectations. A USB connection and Garmin’s MapSource software are small consolation for the lack of mapping and slow signal acquisition. There are better — and cheaper — handheld GPS options.

The StreetPilot c510 is a solid budget offering, and has a few features that are usually reserved for more expensive models.

Garmin has provided a competitive handheld GPS device with the Oregon 300. It provides a full touch-screen experience in combination with a rugged casing and vital navigation tools. We would have preferred more detailed maps, but Garmin has provided room for expandability — making this an excellent choice.

The GARMIN StreetPilot is a reliable and easy-to-use GPS unit.

The nuvi 250 is a solid unit and commands a lower price than the 250W, despite possessing the same features.

The nuvi 250W is a solid unit and the widescreen display is certainly a nice touch for an entry-level model, but its missing a few features to warrant its price tag.