The Mezzo is like a "sausage dog" bike with the level main frame tube and lack of any folding mechanism giving it a long feel to it.. it feels lower down compared to the JetStream when mounting, yet high up when riding compared to what you would expect from a 16" wheel bike (almost feels like a full size bike).. the big difference in the design though is in the steering...even with 16" wheels the Mezzo handles much better than the JetStream because of the handlebar being more forwards and less sensitive.. the weight is pretty much even stevens.. if you put mudguards and a rack on the JetStream though, it would be the heavier bike.