I have had both, pre bluetooth and bluetooth, and the cruise control on neither seem to work as good as my first terrova Ipilot.
With that said I prefer the Link over regular Ipilot, I like the remote better and I use the functions it ads a good bit as well. Following a contour line sometimes is the best thing since sliced bread, sometimes I never have to even touch the remote once I set it for 30 minutes or so, but those are in really good conditions.