The GPS10 is a pretty basic piece of equipment. It doesn't have the latest GPS chipset known as SIRF Star3. So the reception isn't great and it's pretty slow at getting satellites.
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br /But, if you want to use Garmin Software (iQue) on your Treo or Palm, it's the only choice you have. Garmin software uses a proprietary protocol that can only "talk" with Garmin GPSs.
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br /Another feature on the good side is that the unit is a magnet that you can simply put on the roof of your car and it doesn't budge. The range for bluetooth is more than 15ft so it still works perfectly.
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br /So, if you have a Palm or Treo and the GPS10X still isn't out, it's a pretty good choice.

I've ordered about 20 of them. This is the best bluetooth GPS receiver out there. But I've had 4 or 5 of them just quit after a few uses. Garmin grumbles but honors the warranty by completely replacing the unit. GILware software is the best Windows based GPS navigation and mapping software and I use it in conjunction with these units; it is a great, easy to use setup.
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br /Update: I think I discovered the problem with the Garmin 10s...if you leave them on charge (they often only come with a vehicle charger) for substantially more than the two hours it takes to charge them they seem to burn up; this may be because they automatically turn on when on charge. So, just be careful to only charge them for a couple of hours per session.

I own quite a bit of Garmin equipment, so the purchase decision was pretty simple. The unit arrived and was simple to use and worked exactly as expected. Until the third use. It went MIA. Wouldn't charge, no lights, no blue tooth, etc.
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br /I ordered a replacement and it has been working great for 4 months now. I believe this was a very isolated incident, as I believe Garmin's quality to be quite high.
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br /I use the device to interface with Microsoft Streets Trips running on my tablet PC via blue tooth.

I tried about 8 different GPS units. All varying in size, purpose, etc and decided on this unit. I finally decided on the GPS10. It connected easily to my BlueTooth enabled PDA. The software is perfect. The GPS travels with me easily across the country . . . it even helped me find the Rainbow Bridge at Lake Powell. If you already have a PDA, this unit is perfect, compact, and reliable.

It's probably one of the best bluetooth GPS receivers anywhere. However, it's very pricy. Of course you are forced to buy if the maps you need are only available from Garmin. Otherwise TomTom/Destinator/Navigon all provide better navigation software that works with other generic receivers that are much much cheaper.
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br /Saying that, I still think it's better than most bluetooth GPS receivers out at the moment.

The bluetooth GPS device works well. The fact that it is weather resistant and has a strong magnet for holding it on the roof of your car adds to the versatility. However, the plug which weather proofs the connector socket when it is not being charged is not attached and very easy to lose. Also, the software for use with PDAs and phones does not allow you to plan a trip on your desktop or laptop and then download routes and waypoints to the phone. With that caveat, overall operation is excellent.

Bought sensor only, works with my HP Tablet PC without a problem.
br /Using Microsoft MapPoint 2006 and ESRI ArcGIS without a hitch.
br /The power port has a "small" rubber plug that got lost quickly.

I use this the Garmin GPS 10 in combination with a Palm Tungsten T5 for car-navigation. The bluetooth interface works well. It sometimes takes a few minutes before the receiver can determine the GPS-position.

Search for Garmin Mobile 10...
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br /Do not waste your time with this product instead...
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br /The only pro. that product has over mobile 10 is the magnetic mount capability...

The manual says THIS PRODUCT, ITS PACKAGING AND ITS COMPONENTS CONTAIN ONE OR MORE CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR REPRODUCTIVE HARM.
br /Garmin fails to advertise this on their website. You gotta buy this product to find out afterwards.
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