..... no. a GPS system can come in different formats, for example stand alone units, units integrated with AM/FM CD audio systems, those that have wireless capabilities and provide two way communication to a response center for theft recovery and other uses, handheld outdoors oriented , etc. some are voice activated, some require subscriptions (such as onstar), some have advanced route guidance systems which use things like a gyro sensor to determine the direction a vehicle turns, or a VSS to get more advanced information on speed and distance a vehicle has traveled. all of these have one thing in common, they are all uplinked to three, or four, of the 24 satellites in orbit at any given time. taken from garmins website: "A GPS receiver must be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement. With four or more satellites in view, the receiver can determine the user's 3D position (latitude, longitude and altitude)." GPS is also known as navstar and other names, but all use the same technology.
taken from the first link you posted:
"The new generation Garmin eTrex with a high sensitivity GPS receiver."
taken from the second link you posted:
"Highly sensitive GPS chipset "
they have a different purpose, but the technology behind them is the same, coming from the same system. if you want to debate this further, please do more than post two links to two products that say in big bright letters they use the same technology and then draw a conclusion based on nothing at all.
we've gone off topic. the garmin 260 still gets my vote.
http://pantsinacan.com/2008/07/07/my-review-of-the-garmin-nuvi-260/
here is a good review for it ^
keep in mind they also have the 260W, which is a widescreen version for only a few dollars more
