|Oregon 450||GPSmap 62st||Earthmate PN-40||iPhone 3G S|
|Cache 1||13 ft||7 ft *||20 ft||56 ft|
|Cache 2||4 ft *||9 ft||11 ft||17 ft|
|Cache 3||5 ft||4 ft *||8 ft||8 ft|
|Cache 4||5 ft||5 ft||2 ft *||11 ft|
|Cache 5||9 ft *||15 ft||13 ft||12 ft|
|Average||7.2 ft *||8 ft||10.8 ft||20.8 ft|
* Reported the closest position to the cache containerOverall I was very satisfied with the performance of all three handheld units, though the poor reporting of the Earthmate PN-40 was inconstant with my experience compared to the Oregon 300. The iPhone 3G S has never performed up to the level of the dedicated units but its performance has appeared to been diminished in the upgrades to iOS 4 and the Geocaching for iPhone App 4. It will likely be sometime before I am able to assemble a more complete test and hopefully we'll have newer software releases for all these units. I could likely use some help wrangling all the units so if you're in the Metro Detroit area and interested in helping us with the testing some weekends please let me know. Hopefully we'll be able to get out before the weather really turns against us.
All prices are in U.S. Dollars for purchases within the U.S.
Apple iPhone 3G S: iOS 4.0.2 (8A400) with Groundspeak's Geocaching iPhone App v.4.0.1
DeLorme Earthmate PN-40: 2.6.210726
Garmin GPSmap 62st: 2.40
Garmin Oregon 450: Software 3.5, GPS 3.7