I bought a second hand Pulsar 150 in Hyderabad, It is more than 5 years old but still very good.
It is running as smooth as a new one. the best part is its power. Though its old I never faced any problem in pickup. I get around 20 km per litre mileage but it is as expected. grip really depends upon the tyre you choose. New and Depend upon company. it is very comfortable and there is no plastic in the body so there is nothing to worry even if it falls.
In my usage, I never had any problems. the key is servicing regularly from a good centre.