Garmin eTrex Venture HC Handheld GPS Receiver

Having only used the device for measuring how fast (and, more importantly how far... or should that be how lazy) my running is, I've found the Garmin eTrex Venture to be of considerable use.
The screen is easily laid out and accessible, with large, clear print on the measurements pages, and a crisp, bright backlight for low-light use that doesn't require squinting to decipher the text on screen. The included route features and waypoint mapping are relatively straightforward (although entering names for custom points of interest is a little time-consuming), and the 4-way joypad in the top left of the screen is responsive and accurate. The device operates best in clear weather conditions and can reach an impressive accuracy of up to approx 3m (10ft). Battery life is also relatively good too, with my device sustaining up to around a day's usage on rechargable Li-Ion AA batteries (Garmin state 20hrs continuous usage, on batter-saving mode), so their estimates aren't too far off. Furthermore, cities and towns (to populations approx 30,000 in size) are pre-installed on the device's limited 8mb memory.
However, for an entry-level device, I was surprised at a lack of a few basic features. There is no dashboard clip included for attaching the unit to the inside of a vehicle. More importantly, the device will not operate within the confines of any vehicle that I have travelled in - signal will drop to zero once the device is moved within 4 walls and a ceiling. The interface for entering waypoints is a little confusing, and difficult to find under the various settings menus. A USB data cable is not included, for downloading additional waypoints from CDs that the manufacturer sells at an additional charge. And sometimes the operating system is sluggish to respond to commands to move around the mapping pages (this may just be a graphics drawing delay, yet still noticeable).
Overall, a good entry-level, value-for-money device for people who enjoy the outdoors on a Sunday afternoon, whether it's on foot or water, but I wouldn't rely on it to trek through sub-tropical Amazonian rainforest, hiking across the Himalayas or, for that matter, finding my way to my best friend's house when he's just moved 20 miles away and I've never driven the route before.