Touchscreen titans: HTC Touch Diamond vs 3G iPhone vs Sony Ericsson Xperia X1 vs Garmin nuvifone

HTC Touch Diamond
The HTC Touch Diamond isn't, as the name suggests, a mystic gem -- but it is a rather fancy phone that takes Windows Mobile to the next level of touchscreen goodness. Rather than settle for the stodgy old Windows Mobile 6.1 interface, HTC decided to add its own finger-friendly interface.

Almost everything can be done by just using your digits and there certainly is plenty to do. GPS, Wi-Fi and HSDPA mean that staying connected and on the right path is a cinch. It's compact, so you won't need extra-large pockets and it doesn't look bad at all, so you won't need to hide it when you meet your mates at the pub.

Pros aside, when we first used it the interface seemed rather slow at times, but this was perhaps because it was a prototype model. Another issue we had is that the screen requires more pressure on it than the iPhone does. There's no built-in 3.5mm headphone jack either, so you have to use an adaptor or the provided headphones.

It's due out in June on all the major networks. Pricing has yet to be announced, but we imagine that it will cost over £300 SIM-free and most likely be free on a contract.