To be frank their is very minute differnece between Unicorn , Pulsar , CBZ and Fiero .U can buy any one . Most important is which one appeals u more . There is no drastic difference, Look wise Unicorn is not glossy but sober and dignified , pulsar and CBZ extreme is glossy and fiero does not appeal at all (considering the size of fuel tank , front look ie headlight, speedometer, monosuspension ) .so u can go for Unicorn , pulsar or CBZ extreme.Unicorn and Fiero has better mileage than (people say 60 but assume 55)pulsar or CBZ X (say 50). so minor 10 kmpl difference .
CBZ X has the highest pick up followed by Pulsar , Unicorn and Fiero .But Unicorn has the better control, steady movement less sound and less vibration.CBZ X has a unique gear that has to controlled by toe only that is a major draw back.hence CBZ X out.Fiero looks too ordinary hence out.HUs new alloy wheen model looks comparable with pulsar 150 and less price by approx 2k.sitting posture on HU is straight where as in pulsar bent forword . U may get a sports bike feel but that will fetch u back ache.
Conclusion :mileage + monosuspension + smooth soundless driving + sitting comfort ....HU is better.survice center availability is better in case of pulsar is better.I will suggest Unicorn .NB: Oh yes not many people know that Unicorn has launched a new model with alloy wheel and so many changes . It is comparable with pulsar 150cc and with trip meter . It costs 64k+ , old model costs 61k+ while pulsar costs 65k+ in banagalore.