This is from Metzeler's blog. The wrote up three wildly different bikes. I reckon that the TW200 would be more fun than the 900 or the Cub in the city, and the 900SS has got to be the best on the open road.
http://www.ridexperience.com/2011/11/contrasto-ducati-900ss-vs-yamaha-tw200-vs-honda-cub/
http://www.ridexperience.com/2011/11/contrasto-ducati-900ss-vs-yamaha-tw200-vs-honda-cub/