I have bicycles in 3 wheel sizes, 451 mm, 559 mm and 622 mm. Most of the times I ride the folding, small wheeled bicycle because of the 342156 reasons we already discussed here.

This issue of "small" wheels vs "big" wheels is discussed once in a while in the Folding Forums. If small wheels are so good and have so many advantages over bigger wheels, why I haven't seen them in major cycling competitions?