I am riding Pulsar 150cc model which is almost 5yrs old and now I am feeling a lot of service and maintenance cost on this.So wanted to have a change in the bike.My pulsar is now also in very good condition but still I wanted to go for some other

I am riding Pulsar 150cc model which is almost 5yrs old and now I am feeling a lot of service and maintenance cost on this.So wanted to have a change in the bike.My pulsar is now also in very good condition but still I wanted to go for some other model.My choice is Yamaha FZ S V2.0,Yamaha R15S,RE Thunderbird 350.Kindly suggest me which one would be a best choice in terms of performance,service cost,mileage etc.

Question asked from: http://www.carandbike.com/yamaha-bikes/yzf-r15s