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.

Freedom's mini GPS is a solid GPS receiver in a compact package that works with most hardware and software combinations.

If you spend a lot of time driving around unfamiliar areas by yourself, the iQue M5 could be a substantial time saver. It is well-built and easy-to-use, but a little pricey.