When I first caught sight of this product I was curious to find out what it was all about. I mean, it looks great - I'm a sucker for blue LED's - and it seemed to be an unusual way of controlling your navigation through various applications.
I was given this mouse/trackball as a gift from a friend, and at first I was really disappointed that you couldn't use it for day-to-day office programs. I was hoping for a funky replacement to my regular mouse, but this was not the case.
Once I had read the literature associated with this product I realised that it is only supported by certain programs.
In a nutshell, this is really only useful for 3D navigation (as the name suggests).
I have tested this mouse mostly on Google Earth and it really is amazing and easy to use.
The centrally mounted post is really great for zooming your way around. You can pull it, twist it, rotate it, rock it...everything! And every action performs a different function e.g. if you push the stick forward you zoom in, or if you rotate it from side-to-side it will rotate your view. It's a little hard to explain because there are so many variations in movement; you really have to try it for yourself.
The build quality is excellent: the materials are of a high calibre, and the overall feel is smooth and sturdy. The buttons on either side are ok, but they're a little fiddly to use.
Overall this is a really good quality item, but it really is only useful iif you work on 3D applications e.g. Google Earth or CAD packages, on a day-to-day basis. Otherwise, you might as well save yourself £75, and go for a bog-standard mouse...although, that blue light underneath the central post does look awesome and definately attracts a lot of attention from passing colleagues.