I have read a lot about gps units over the past couple of weeks and the more I read the more questions I have. There are some pretty good deals right now on garman units and the Zumo 350LM is down to $499. I also like the Montana 650 real well. I am looking to use this not solely on my motorcycle but my riding will be both regular roads and backcountry routes. No hiking or backpacking. Where I get confused, and this because I've never used a gps before, are the pros and cons of various functions. Being able to create routes, sharing routes, geocaching, etc. I probably don't know enough to know what I don't know, so I'm looking for advice. I'm really not looking to spend big money like the expensive 660/665's Zumo's unless I need what those have over the less expensive 350LM or 600/650 Montana. The 350LM at $499 seems like a pretty good deal with the lifetime maps, but is a Zumo good for backcountry discover routes like the handhelds? Any advice is greatly appreciated.