This BlackBerry handset is revolutionary

The Storm doesn't quite have the iPhone's smooth edges - but don't be fooled, this is a revolutionary handset.

The large touchscreen is superb and video quality is astonishing, with colours far clearer than on the already excellent iPhone.

The menu system has been redesigned to make use of the screen and key websites such as Facebook have been integrated, so you can instantly see if you have a message.

There's a decent web browser, but sadly it does not have wifi, meaning browsing is nowhere near as fast as on rival handsets, even though it uses the high speed 3G network. But typing is a revelation. The screen allows you to "click" on it when you want to press a key, giving the impression you are using a real keyboard. It works superbly.

Typing speed is almost as fast as on a real keyboard - far better than on Apple's handset.

However, the BlackBerry falters with music and video. It doesn't have enough memory - only 1gb as standard - although that can be expanded with a memory card. Getting your music and films on it in the first place is also harder than it should be.

Too many bits of software are needed and there is no easy way to buy and download video. Apple, on the other hand, has a slightly less impressive screen, but a vast catalogue of music, film and TV shows.

For the average consumer who does a bit of everything, the iPhone, with its superior music capabilities, is probably still the best bet.

But for heavy emailers or business users, the Storm is far better. This handset will worry Apple for the first time.