I can only give 5 stars for something that's perfect, so by default the GO 720 has to get 4!
Was originally going for a One XL as the navigation was more important to me than the bells and whistles, but as the prices have dropped I went for the bells and whistles too - and am glad I did!
What's good: just about everything important really...
- great navigation (which is surely the most important thing)
- very good at quickly re-routing
- took 10 seconds to get a first position fix out of the (fully sealed) box even with a fairly poor view of the sky, 2-3 minutes is acceptable for most GPS receivers for a cold start
- GPS is so sensitive it still has a position while inside my house (and fairly near a window)
- MapShare is really useful to sort out the odd road that should be one-way (some would say it shouldn't be necessary but I'm sure all satnavs have some issues and at least TomTom gives you the means to do something about it!)
- mounting device is very simple to use and very easy to remove, doesn't leave tell-tale marks
- lack of an AC charger really not a problem as it charges while in the USB cradle, as well as by the car charger - full charge lasts about 4 hours
- ability to make/receive calls and have the device read out texts is handy
- text-to-speech and speech recognition works very well and is worth having
- generally feels like a good quality piece of kit, don't leave it on show!
- the navigation software generally feels like it is a well thought out "mature" product, and does what you expect it to do
- TomTom Home software works really well and has managed all updates with no problems
- being able to browse the TomTom from Windows like an external hard drive can be useful
What's not so good (this list looks as long as the other one but most are minor items):
- updating the maps cleared all my favourites, fortunately I did this soon after buying so I only lost the ones I'd added while initially playing around
- the FM transmitter really is too quiet with too much hiss
- can't use my O2 Payandgo phone for traffic updates even after manually entering GPRS settings (apparently a known O2 issue)
- screen can sometimes register two taps leading to unexpectedly sending a partially complete text or OK/cancelling the second screen
- I think for the same reason, manually panning the map by dragging a finger is virtually impossible, why not just tap to re-centre the map?
- most of my local petrol station POIs were a bit inaccurately placed - suspect this is a wider issue
- screen is hard to see with direct sunlight on it
- some POI sets don't apply to UK
- some inconsistency in the settings menu - with some you're sent back to the map, others back to the menu
- good to be able to control the TomTom from the PC (handy to set up lots of favourites, etc) but car symbol and some quick menu settings are lost
- 30 days "latest map guarantee" is a bit stingy - could I have expected a year?
- by the same token, only allowing a year of MapShare is poor, does TomTom want users' help with mapping errors or not? At least you can continue to use the facility to make corrections for yourself afterwards, you just can't upload or download them
- rather a lot of "nanny" features (most of which are on by default and all of which can be disabled apart from the odd annoying warning, eg the "shortest route" not being the most fuel efficient)!
- TomTom Home can only manage one backup per device, seems like a daft limitation but you can get it round by just copying the backup somewhere, if you don't do this I suggest not backing up after upgrading until you have checked all is well!
- TomTom Home's help text recommends backing up after doing a major upgrade, this is poor advice, you should back up BEFORE the upgrade so if it goes wrong you can get back to it; by all means back up after the upgrade if you're happy all is well
- when using the hands free phone the speaker can be quite boomy, mainly with loud recorded messages and ringing tones