I tried using one, but I travel through lots of tunnels on my way to work. The systems always end up putting me in a completely wrong place! Are there any GPS units that can work in tunnels?

Realistically, even if your GPS unit loses its signal in the tunnel, it should regain it just a few seconds after you exit the tunnel. So in the end, it really shouldn't have too much of an affect on the overall navigational experience.

More of a concern for me is the fact that alot of the mapping directs you to turn right at streets that have a "no right turn" sign. Very annoying.

Just got a Uniden Trax430. Simple to use, clear interface and responsive touchscreen. Haven't had a chance to see how good it navigates yet. The only head-scratching moment i've had so far is when i plugged it into my PC and nothing happened! (The USB port was undocumented in the manual.)

Anyway, turns out you need some software called Trax Central, which Uniden does not provide in the box. Once you get it you can browse the unit and see what's installed (maps for different, places of interest etc...).

I have had a Garmin for a few years. It is just a GPS system which is really all I want. It's major weak points are street pronunciation, the price of new maps and the difficulty of getting new maps of Australia or for other countries.

I note that the Navig8r claims better pronunciation including of Aboriginal names. Can anyone comment on this claim?

I already had a Nokia 6110 navigator as of August 2008, but could not get map updates due to appallingly bad after-sales service policies, so decided to get a "real" GPS. Wound up with a TomTom One IQ Routes.

It's a waste of $$$. I need a GPS for those times I'm "off the map", so I need reliable maps. TomTom uses Whereis, and until I tried the unit I had no idea how abysmal that technology is. There is no point in having "Mapshare" if the underlying structure is -- at places -- 10 years out of date.

OK. Some people have problems with school alerts. Just take a Cap'n Cook at what passes for a school these days, and you'll understand why I rapidly switched it off.

Oh yes. The much-maligned Nokia has Lat/Long in 2 decimal places of a second, eg: E120:20:35.26, which gets about 11 meters accuracy (or is that precision?) But the TomTom only displays to the nearest second...

I'm taking a hammer to the TomTom real soon, since the NavMan My50T seems to use NavTeq maps. I can tell you one thing very truly: I won't ever waste my money on any GPS that uses Whereis again. Ever.

Tomtom models - particularly the new Tomtom 130 and 340, which feature advanced mapping, are quite reliable, and their software is much easier to use, however I find them considerably higher priced.

I have practiced and tried all the new 'MY' series of Navmans, and although they are going to retail fairly expensive (the most expensive being at $600, least expensive at $300), their softwaring is very reliable, user-friendly, and their features for the $400-$600 range are fantastic.

If you're going to spend $400+ , get the new navman.

if less, get a tomtom.

I work in GPS marketing so I speak from experience.