Summary: It's partly my fault, of course. I bought this to use on my motorcycle. I thought the small size, especially the flat body, would fit nicely into the top of a tank bag. I also bought a special handlebar mount for it. Unfortunately, I've had nothing but trouble with it. It's slow to acquire satellites and to recalculate routes. Whether you're driving a car or a motorcycle, it's not up to the task of keeping pace with changes in your route.
Summary: I had an M3 before and I regret replacing it with the M5. The M5 is not user-friendly at all. You would think that after using the M3 for several months, it would be easy to use the M5. The user interface on the M5 is almost totally different. It doesn not work well with Outlook. All my contacts in my M3 were all listed in the Que program by default, but in M5 you have to add them manually, but it gave me the wrong coordinates - all Contacts that I added in My Locations...
Summary: Despite what the technical details on this page say, you need a DVD drive, not a CD-ROM drive, to load the software. It does say DVD drive under system requirements on the box, but that's after I bought it online and waited a week to receive it. I spent about an hour setting up the parts, charging the battery and then popping the disc into the CD-RW drive on my 2 year old Dell. Nothing! My Dell has a CD-ROM, but can't read DVDs.
Summary: I like garmin products. Seems support for this one is a bit dicey. Pro's - It's a garmin. Most of their products are great, and their mapping software is good. Con's - Bluetooth. Doesn't appear it works with much. Garmin tech support admits it doesn't work with any keyboard or headset. They don't admit to what it DOES work with. Seems they are relying on users to discover that. Documentation can be a bit sketchy too. Again, relying on users to find and report the bugs.