Which bike do girls find more attractive - KTM Duke 200 or KTM RC 200?

Depends on your face ;_;

It's definitely the RC series from KTM which gets more attention from everyone. The Duke 200 gets black alloy wheels and black underpinnings, making it look a bit decent whereas the RC200 gets Orange wheels and underpinnings, making it more attractive to the eye. Also, the fully faired bikes are considered as superbikes in India whereas even a 1000 cc bike without fairing gets ignored many a times. You should definitely go for RC200 as it would serve your purpose the best way whereas others in the segment look much common and lesser attractive.

KTM RC 200 - City Performance

Always KTM RC bro, my friend has a KTM RC, when you ride on streets, you get attention from crowd :-)