the ninja 650, 2011 version looks nice and poised. The 2012 version is more meaner and uses the new metalic color scheme instead. Personally, i like the 2011 version of the styling more.
Engine performance, fuel economy and gearbox
the engine on the 2012 version is retuned to make for a comfortable riding experience. The torque delivery is extremely linear as compared to the 2011 version which spiked early on, and made in fun in the mid range and has a blank spot around 6000rpm. The gearbox is nice and almost unchanged for both the models
ride quality & handling
the 650 is a very practical bike for the indian market. It can take a lot of abuse, average roads etc. The braking is a sore thumb for the bike however. This can be fixed by using after market brake lines easily available online
at the pricing provided, the ninja 650 is a sweet deal with reliability and service on focus
areas of improvement
braking. Light spread. After sale support in terms of parts availability and cost