I am looking at buying the Mezzo D-9 or the Dahon Jetstream P8 or the Dahon MU XL. My primary use for the bicycle would be for traveling and recreational.

Mezzo:
Pros: Folds Small, Components are good quality
Cons: 16 inch wheel, Bumpier ride and smaller selection of tires to choose from

Dahon Jetstream P8:
Pros: Front and Rear Shocks to smooth out ride, 20 inch tires and good components
Cons: Folds big.

Dahon MU XL:
Pros: Internal Gears, 20 inch tires and good components
Cons: Folds big.

They are all with in the same price range. The reason I am looking at the Jetstream P8 is my wife had back surgery and she will also be using the bicycle. I thout it might give a smoother ride. My main Bicycle is a Trek FX+. So any help or suggestion would be appreciated