I own both a 700c and 26in touring
The bikes
700c 63cm (25in) C-dale Touring
26in Rodreguiz UTB
The major: Physics. How ended up with one still baffles me.
Why do I have both?
I bought the Rod so I could ride gravel roads and transition travel better. If I'm on decent tar 98%+ of the time I'll always choose the c-dale. It's extra big size grants so many comfortable positions. However, on gravel or crap roads I'm so high up that at low speeds life is not fun. Also, 63 bikes are beastly to lug around. (Bus racks have destroyed two 700c rims)
The rod-cycle is more "fitted" and easy to control on bad road. As bonus it fully cases in about an hour.
On the estitics, 26 in tires just look right on smaller touring bikes but on a tall bike the geometry seems freaky. Same deal with 29ers on short Mtn bikes.
(side note) A short person in the family has a 26in novara and rides B-hams Galbreth Mtn much to the shock of the fully suspended crowd.
-esc