Cobra GPS 100
Historic Range: $89.99
Reviewers Paid: $60.00-$150.00
Even though Cobra had to replace two GPS 100s under warranty, I still rate this unit with four stars. It takes a little time to understand some nuances about it, but once you do, it's quite an instrument.
Positives: Palm-sized; quality feel;, ease of use; secure satellite acquisition, even under trees or mounted in a car; altimeter; precision measurements.
Negatives: Battery life OK but not great; occasional waypoint navigational anomalies; back-light drains power rapidly; battery cover doesn't seal against water leaks; only allows one route to be saved at a time.
People have complained about the loss of satellite acquisition. If you set Battery Saver to OFF, the unit seeks a signal every second. With it ON, it does so every two minutes. Set it to OFF, and you'll love the results. With the 12-volt adapter or healthy batteries, the GPS 100 is amazingly reliable, able to lock onto a least four satellites, giving you an altimeter reading. One thing I highly recommend doing is downloading the manual from Cobra. You'll learn a lot.
All in all, this is fantastic GPS unit, and Cobra customer support is terrific. You certainly can't beat the price.
Price Paid: $60
Locks up constantly, long aquisition time, must be in the clear to aquire.
Price Paid: $150
Totally no use in forests and sometimes in open ground. Very long aquisition time and gave incorrect locations. Not to be trusted.
Price Paid: £100
Very good and accurate at low-speed traveling. At high-speed (over 100km/h) the receiver gets jammed sometimes. For all weather use outside, you could even mount it on a motorcycle when it is raining like hell and it won't get wet inside. For screen-protection I just put a thin plastic strap on the screen. This helps against scratches!
Price Paid: 80 euro