Originally Posted by
bkrownd
I just don't know that it makes a lot of difference either way, unless now and then you want something you can put some serious off-road knobbies or seriously narrow road racing tires on. I doubt that 700c are any "faster" than 26", for the same width tire on (basically) the same bike.
For the same rotational input and width, the larger wheels are faster, because bigger radius = greater tangential speed.