This unit may or may not end up being useful, but the getting started curve is way too high.First, it is not Mac compatible. If you plug the USB port into a Mac, it won't recognize or mount it. The internal memory is an SD card, so you could probably plug it into an outboard SD card reader; I haven't tried that, not having a reader handy. The product box and literature doesn't say "PC Only" anywhere that I saw.
Second, the map download interface is clumsy and simply doesn't work. You outline a map area, save it to some kind of browser pseudo-folder, drag that into a download box, and click download. Nothing happens. You then read the on-line help, which says to turn off popup blocking. Do it all again, and you'll get a popup telling you to please select some sort of directory first. (And it suggests the wrong one, if you're running Vista or WIn7.) And that's it. Poof. No download, no files, no place to select directories, nothing. (This is using Firefox, I refuse to use IE for simple web browsing.) And, just to piss you off, the "Contact Us" emailer from the downloader page produces a "no such email address" message after you've typed in your message and clicked send.
The unit itself seems a bit slow, and responds erratically to the arrow buttons; sometimes the left and right buttons don't seem to work. The battery life seems poor, I ran it down halfway just playing with it for an hour.
So far, it's been a dud.Bushnell Onix400 GPS XM Receiver
