but that's not really true. the folded size difference between the two bikes is more than an inch here or there.

Dahon Speed P8 folded dimensions/weight - 11.8" x 30.3" x 25.2" / 26.2 lbs

Dahon Espresso D21 folded dimensions/weight - 13.3" × 36.7" × 30.8" / 31.1 lbs

source: http://dahonbikes.com/mainnav/home.html

i guess i just fail to see how a bulkier, heavier folding bike is less clumsy on transit than a smaller, lighter folding bike.