I have been using the 60CSX for a while now. 100% motorcycle use--70/30 dirt vs street. I use the 24k topo maps and City Navigator. While I still have a lot to learn, I am considering an upgrade. My main goal would be to get a larger display and better viewing in varied lighting. My 60CSX has always been quirky as far as transfers to/from the PC with USB cable. An improvement in this area would be valuable but not absolutely required. In addition to maps I have the hard wire setups for my bikes and a cig lighter power connect. Ram mounts and cradles. So, any thoughts on the Montana as an upgrade in my situation? Benefits/downsides. Other uni besides Montanat? Also, does the Montana use any of the same wiring, mounts, cradle? Thanks a bunch!!