that's the question i keep asking myself! i have a regular speedy in de and use it way more than the mono. i really love the de. the only thing that concerns me a little on speedy b is the wrinkling some have reported on the side stripes. if i get a de speedy b at some point, i will try to check carefully for gaps at zipper and leather condition, but i guess some leather problems show up later? still love the de tho. good luck!
If I get speedy b later, I will try to check on those flaws too. Thanks, dear!