I wanted to write a review to sort out a few issues raised by others which may put you off buying one. I have had NO problems with this item at all. It doesnt freeze and there's certainly no issue at all with the windscreen holder. The charger falling out is due to having it badly placed, I suggest people try putting it lower down so it rests on top of the dashboard as recommended. As for freezing, well its never happened to me.
I used to own a Tom Tom Go 300 and i thought this would be a small but worthwhile upgrade. Wrong, its a massive improvement in every way!
Firstly theres the new quick fix system. The unit plugs into your PC and downloads the location of the 12 GPS satellites for the next week so instead of wasting a minute searching for them each time you turn on you get an instant fix. The screen is much easier to see thanks to the auto adjusting light sensors. When i first used mine the sun was glaring and there was rain and thunderclouds and i could still see the screen while wearing sunglasses! The text is larger, crisper and more spaced out thanks to the 4" widescreen display.
You can now do a "city search" so if you don't know exactly where you want to go but just want to visit a city you can! Just type in "Brighton" for example and it'll take you to the main town centre, so much easier than having to make up an address or type in a random postcode.
The 510 also connects directly into your PC so you can use the Tom Tom via your pc keyboard and screen and plan your journeys without having to tap the screen. The hands free kit works fine with my phone and makes talking and driving much safer. The list of features goes on an on, the best new addition is the ability to watch the 510 drive the whole route before you set off to get used to any tricky junctions. You can also see a series of snapshots of the journey to help you spot what to look out for
Overall i struggle to see how anybody could improve on this system. True, the first time i used it i got sent down a road that was shut for roadworks but you can hardly expect it to know every single road closure on a daily basis! Even this wasn't a problem, i simply did a u-turn and within 2 seconds the 510 had worked out an alternative route.
Forget what others may say, this is a top notch unit which i as an advanced driving tutor would recommend to any motorist. Get it or get lost.