I have an 07 1098s. bought here used with 2000 miles, added 4700 so far and I have not have a single problem.
However,
It stalled once at a light but restarted 5 mins later. It was a very hot day. Turn signal vibrated out of the right mirror.
Also had some recall work done under warranty, so thats not an issue as a second owner.
My impression has been that they are a little more finicy to start and such but very robust once running. I haven't heard of a single mechanical problem, on here or otherwise.
I will let you know how the first valve adjustment goes. $$$?!?