Summary: Product is great, although it is a discontinued Garmin item and therefore does not have any support and is also not eligible for Lifetime Map Updates....otherwise it is a great item. Works well and interfaces with Google Earth (Tip: be careful not to clear the cache otherwise Google Earth will not be available when on the road as you will not have a active internet connection).
Summary: I do like the large screen my laptop provides for navigation. the small screened navigators are a hazard to me. Other than having to deal with Garmin, their customer service is as bad as it comes, the product does what it is advertised. It locks on to the sats fast and acurately.
Summary: This is a compact unit that has very fast acquisition time. Easy mounting options, with the magnetic base, or the threaded insert. Easy to wire up and integrate into our application. Garmin did a nice job on this unit. The price is very reasonable.
Summary: The USB version of this GPS receiver is the usual high quality of a Garmin unit, but it does connect to a computer in an unexpected way, so be careful when buying this unit. Most "hockey puck" USB GPS receivers create a COM port on the computer, which makes them very compatible with mapping programs and other GPS software applications. The Garmin 18 USB creates a new DEVICE in the Windows Device Manager and does not generate a COM port for your use.
Summary: This is not a haldheld but for use in a car or other vehicle. Works perfectly. Drove all around in Florida using this. The fault with using a laptop as a navigational tool is that it is a fraction slower than the dedicated units so when the computer says 100 meters to next turn you have managed to drive a large part of that distance Baldur