The Fit is the more mature and decent to drive car of the list and personally feel the better all rounder.
Wagon R hybrid is a kei car which means if it has a 660cc engine that feels a bit more watered down with the hybrid motor. Out station trips are going to be quite a steain especially in mountanous regions or a full car.
The Aqua, well justs another Toyota that will get u from A to Z. Feeds well in to the masses' addiction to any POS eith a Toyota badge on it.
No idea about the Peradua.
Pros and cons of the anove cars and hybrids have been extensively discussed do just search the forum.