I am 5'10'', which bike should I buy?

The best bike you can get currently is the Bajaj Pulsar RS200. It will definitely suit your height and be the best option out of all the other options available in the market. The bike comes with a refined 199.5 cc, 1-cylinder, liquid cooled and fuel injected motor, producing 24.2 BHP @ 9750 rpm and 18.6 NM @ 8000 rpm. The engine comes mated with a 6-speed gearbox, making it easy to reach 140.8 kmph of top speed on the new Pulsar. It comes with twin projector headlamps for the front and LED taillight for better visibility and design enhancement. The bike comes with optional ABS trim and comes with a starting price of INR 1,18,000.

Bajaj Pulsar RS200 - Fastest Pulsar Yet!