This is my 3rd sat nav device and I am already planning my 4th as this unit is useless. The vocal navigation doesn't always follow the map, on one occassion driving through Wales It said turn left and as I did it said turn right while the map showed the road going straight ahead. Have been taken down some unknown and unusable roads/lanes barely wide enough for a car, god help anyone pulling a caravan. Have used a Tom Tom previuosly which gave a better choice of route selection and roads to avoid and a choice of vehicle size etc, so I am looking for a Sat Nav with similar settings.

Have purchased three, a Navman 320 lasted about a year before the on/off switch broke. Replaced with F20 for my partner already been returned for a new mother board and a F30 which has been returned for repair and now won't charge and the traffic system refuses to work.

My Navman F20 does not work outside the main cities in Northern Ireland and the Republic of Ireland. Pay a little more money and buy a better system.

Absolute rubbish and I've spent 16 months with it. Sometimes goes totally gaga - I would NEVER recommend this. Rubbish to anyone.

If you get a Navman F20 as a present like I did, ask for the receipt and get a foot bath or something else. Charger point broke free. Rubbish at long distance stuff. Would NOT recommend.

I bought my system used it three times, then when I went to turn it on for the fourth time, it would not switch on unless you kept switching it on and off several times I presume something was not connecting correctly but really annoying after only three weeks of ownership.
My niece also bought one of the same model at the same time, and had to return hers as the connection on the side of the system had come loose so the system could not be charged. My sons also bought the same models one has had the same problems as my self, and the other one thinks his is a marvelous buy and uses his every day when I returned mine the manager advised me that he also had this model and he found it unreliable so I paid forty pounds extra and changed to a Tom Tom ONE I have not had enough time to comment on this one yet but so far so good and there are a lot of extra features on this one compared to the Nav Man.

I can't believe I've had the same Navman F20 as all the other F20 unit reviews around!

My benchmark is a Garmin Streetpilot i3 which I've been a user of for over a year but thought I would upgrade to a more up to date unit with extra features. Unfortunately, the F20 didn't fit that bill for me.

I found the maps to be very unclear and cluttered. It assigned the wrong house number to my home address which couldn't be changed and was just plain annoying. On a postcode search it wouldn't allow me to add a house number and would randomly assign a number which couldn't be changed. The voice guidance was a backwards step even by the Garmin i3's standards. The Navman website offers minimal support and didn't seem to offer any answers. The one thing I did notice on it was that for Navman F20 software updates you can download them and then have to upload them to your unit via a USB cable. Unfortunately, the unit doesn't come with a USB cable... a clever touch or what?

The one thing that did seem quite good was the screen suction mount...lol.

OK, this spent less then 24 hours in my possession but that was because I couldn't wait to take the thing back and get a refund! I'll stick to a Garmin in future. Certainly an i3 isn't worth upgrading to this for.