I drove my FILs Duet scooter two days back. I drove it for about 110Kms round trip in Chennai(From Perambur to Guduvancheri via Medavakkam). Initially I did not like it for its heavy weight(due to all-metal body). But when I started riding, I started liking it. Its engine is smooth(not as smooth as activa), and its vibrations are minimum between 50 - 60KMPH. Extremely stable on roads. Good braking tho it does not have disk brakes. I felt it more safe due to metal body.
The vibration increases above 60, and since it is new scooty, I did not push it beyond 65KMPH. I did not measure the consumption, but I am sure to get above 40KMPL as I filled for Rs 200 and petrol was still @ good level when I completed the tour.
Good brad seats are comfortable, but I wish that it is bit more soft. The biggest problem was the hot air comming from under the chassis and harms my left feet. I feel it when I have to stop the vehicle @ signal. The side stands got so much heated like silencer that I got burning sensation a couple of time when I accidental touched it. This is a design issue which Hero needs to fix.
It is a very good scooter for long drives, but I dont want to comment on longivity. It can only be tested by time. Activa has passed the tests with flying colors, and lets wait and see how duet performs.
Thanks Ganesh