
My 12 has been used as a mule many times carrying 2 Ventura bags and 2 people with a combined weight of +200kg. Hardly noticeable with a pillion for manoeuvring and acceleration as far as having a passenger is involved, but that’s just me.

The only issue I have with extra weight is the castellated nut on the rear shock, it is a PITA to adjust.
The 9 would be a better track bike and both would be comfortable for the rider, I have back, neck, hip and leg problems and I have little trouble with mine.I have to refuel every 250km's anyway so smoko breaks are common.
However and I am not trying to offend you but I will anyway you are of the shorter variety of rider yes? maybe a late model 9R is the go, bigger weightier guys prefer the 12 for obvious reasons and I have seen some smallish people riding 12's and busa's in my time. Is fuel injection something you would like, awesome power, and speed then 10R or 12R.

After all that dribble my un-biased opinion is the 9R is what you need, the 12R is something you inside will want.

Just take ya missus and test ride mate.
