Hero duet, basically I like the concept which hero show us in duet like they give us new design and new features, I like outer fuel function and then main one key hole, you can handle everything with one main key switch, hero really work hard for his market value that's why they keep modifying their vehicle like in New bs4 model you have new silencer, light and charger connectivity under in storage space. And talk about performance so you all better know the name of hero splender, so it's simple that if they manufacturer that type engines so there's no problem buying this vehicle. My personal opinion about this vehicle is if you are looking for vehicle who take all your riding burden so it's best option or you can also say that worth buying.