I've had my GS-911 for two years but finally found the utility of this user forum. I like my unit too. I'm trying to switch the interface from an old laptop to a new tablet computer. I mentioned the GS-911 unit to the local, official BMW dealer in Omaha. Surprisingly, their mechanic had never heard of one. Of course, they would not mention such a unit for fear it would take away business. Not to worry, I still bring my bike in because the GS-911 unit tells me what is wrong but won't fix much.
I am waiting on the K1600 compatible unit.