I got this Binatone Carrera A350 sat nav for christmas last year, and I must say its a bit of a mixed bag- lots of good points and a few bad points. I dont think this is a particulary expensive sat nav and it does the job. It has full UK and Europe maps, different route selections and point of interest suggestions.

The maps on the sat nav are really easy to follow, very clear and the use of different colours for different types of roads, trainlines and motorways and such like make it easy to anticipate your route, as well as this the route you should be taking is in a different colour. The voice on the sat nav is interchangable- as far as im aware, the choice is between a male and a female voice, although apparently you can download different voices, including novelty ones, from the internet although I have never tried this. I feel that the sat nav instuctions are good in that they do give you plenty of warning before the next turning, road change or destination for example and repeat it a number of times, giving distances (which can be changed between imperial and metric). The voice will leave you alone most of the time while driving- I know some who will tell you if your speeding or where the next rest stop is etc.

Inputting your destination is quite simple, you can choose to enter a postcode, street name, popular destination or even a whole town or city, the user interface which is touchscreen, is quite simple to use, either using your fingers or the special pen.

The only major bad points as far as I can tell is the route sometimes seems to be the most bizzare and obscure route it could ever find, although this could be my imagination. In addition to this the estimated arrival times are sometimes quite optimistic.