I prefer shaft, but upfront cost about $1000 dollars more when new. Worth every penny!
I think thats a cheap price and worth every penny,,just remember lots of Jap bikes had shaft in the 80s,wonder why they quit using them on "run of the mill" bikes... I like the idea of belts,,but think and read they are not totally idiot proof and do need servicing...Ecomomicly the best by far is chain in a chaincase,should be good for upwards of 30,000... I never did change the cam chain on my old Saab and it ran for over 200,000.