The much-hyped Touch Diamond had plenty of potential, but ultimately it is a hugely frustrating phone to use. A great display, stylish design and reasonable browser are let down by a sluggish and slow user interface. Unfortunately, the great eye candy of the Diamond isn’t enough to push it over the line.

For heavy text input, the Touch Pro is a much better option than its little brother, the Touch Diamond. There are still plenty of issues, but the sluggish interface has been slightly improved, and removable storage is a welcome addition.

The p3600i is a feature-packed device and the scroll wheel makes navigating through it an effortless job.

HTC's TyTN II is one of the most outstanding smartphones we've ever reviewed. A few minor improvements and this could well have been a five-star product.

The Touch Cruise may not be the best looking smartphone on the market, but it has an excellent features list, headed by built-in GPS, Wi-Fi and HTC's TouchFLO interface.

Laser’s Navig8r M35 is one of the best value for money GPS units we've come across. Don’t let its low price fool you: it is packed with features, including detailed mapping data and Australian-accented text-to-speech.

The FD-250 has most of the basics and a few extra features that will serve you well, but the lack of responsiveness of the touch screen is an issue.

At this price, the LN500 is an excellent choice, especially for a first time user. Text-to-speech technology, solid Destinator software and a stylish, slim design are enough to put this near the top of your list if you are on a budget

The LN800 offers a larger screen and a light sensor, but we don't think its worth the extra asking price over the LN800. Still, it's a solid unit with a fair list of included features.

Costing the same as a low-end automotive GPS unit, the Triton 200 forgoes a touch screen as well as turn-by-turn and voice navigation in order to specialise in detailed mapping for outdoor activities. However, without the expandable memory required for detailed maps, the Triton 200 doesn’t provide the functionality necessary for more complex hiking and geocaching adventures.

Magellan's CrossoverGPS unit is a fair effort, but it's lacking in some areas. If you do your fair share of walking and boating though, this is definitely worth a look.