If you want 250cc bike in a low budget then I will suggest you to buy fz 250. It has oil cooling, breaking system is too good. Its a naked racing bike, so you can enjoy long drive. Its fuel effeciency is also good rather than compared to other bike which are 250cc.
Its seating position is also comfortable. As the back tyre is bigger in size, it gives you a best road grip and low chance of sliping. So I suggest you to buy this bike and enjoy the ride