Which marc jacobs backpack?

I was either considering some coach loads that i already posted, but I was in love next to a couple of Marc by Marc Jacobs bags..they are so cool! which one?

http://www.barneys.com/b/browse/product.

Or this one

http://www.barneys.com/b/browse/product.

or this one (in blue)


http://www.shopbop.com/airliner-leather-...

Answers: 
i agree near mandy the second one
I love adjectives of them. But, I give the edge to the second one. I love convertible heaps because you get 2 looks in 1 rucksack (a satchel and a shoulder bag). Enjoy whichever bag you decide to purchase!
The only decent one on this detail is the 2nd...
I like the first one!! For how expensive they are that one could hold the most stuff and is the most logical!!
All three bags are pretty plain and moderately frankly, not my taste. If you are really interested in purchasing a Marc by Marc Jacobs case, I would recommend either one of these bags:

http://www.shopbop.com/totally-turnlock-...
http://www.shopbop.com/colorblock-delanc...
The first and second one!
the middle one is definetly the cutest! but oh my they are SO expensive [to me at least possible i wont spend over $60 on a bag haha]
the second one all the way! :)
the second one!! :)