I am using the Yamaha fz for more than 2 yrs . its a very good bike. self balanced, better safety, stylish, offers comfort rides, I went a tour on this bike a total of 1000 km, I did not have any back pain. but you have to adjust the tappet every 15000 km or once in a year or else in cold areas the bike gives worse fuel efficiency and power, sometimes the engine would not even start.
proud owner of a Yamaha FZ s. believe me its a awesome bike.great ride quality.awesome Handeling.and its macho look.everything is best upon 150 cc segment.but fuel consumption is slightly disappointing.if u like to ride bikes an fuel consumption not a b deal for dn go for fzs.