We have a 675 Kw
Vestas in town on the grounds of a private school. It was there years before our "Town Owned" turbine and still runs every day without any issues that anyone is aware of.
The Town elected to go for the low bid. We got a $4M turbine for $3M. BTW the siting of our Town turbine is excellent. It's on the highest hill on the island and can be seen for Miles through 360 degrees in ANY direction.
Frank...? "How come that thang don't RUN"..? 
NB