They can be difficult to maintain, and expensive to do so. For example valve adjusting is pretty frequent on some models and you need a midget with four arms to do it. If you have a dealer do it they nail you for it. 1000 to 1600, and some models need it every 7500 miles. I would need it done twice a season. Newer models are getting better,
It's like all the old Harley peeps from the AMF days moved to Italy and got jobs there.
That said, between maintenance visits I understand they are super machines. Great stuff.