No one else responded so I will share my experience: I used an etrex on my F650 thumper and dakar and went through three of them before switching over to a 60cxs. I kept having to return the etrex to Garmin for warranty service. The rep told me the etrex is not robust enough to withstand the vibrations of motorcycle mounting. After testing that three times, I gave up. The CSX is a bit bulkier and heavier but I use it everywhere--backcountry skiing, climbing, backpacking and riding my F8. I'm sure others have had better experiences with the etrex but I wouldnt trust it again for motorcycle usage.