Join Date: Jun 2013
Location: Central West NSW, Australia
I don't think either engine is prone to many issues on average. There's a few exceptions with individual owners having one issue or another but most owners of either engine have little to no trouble of any kind, so long as they keep up the maintenance.
The 1000 has the clutch chudder and migrating stator magnets
Both can have starter button and regulator issues (the latter is more a Suzuki thing in general though)
The 650 ... actually I don't know of anything specific to the 650. Someone else will have to chime in.
"I've recently come to the realization that true happiness can often be found at the bottom of an empty gas tank" - Prime