What to look for in buying a used Superduke

I'm new, not a Superduke owner yet. I've been looking at several used Superdukes in the southeast, one with less than 20 miles on it on Cycletrader.com, one at a dealership somewhat close to me and two listed in the marketplace section of this site.

I know how to judge the condition of a used bike, but am looking for things particular to the SD to look for and look out for.

Any heads ups on recalls, known problems, or prefered must have modifications appriciated.

I'm selling my 06 Triumph Daytona 675, got a buyer who is in the service and comming home from deployement, check/money order is supposed to be on the way, but you know how that goes.
Texas is a bit far for me to go, when there are several good options fairly local to me.

Thank you to everyone who replied.

John

+1. Same people to look out for when shopping for used BMW M cars.