I'm trying to decide between a BB Travel bag and a Zip Bag. Does anyone have both? What are the major differences (other than one has a pocket, the other doesn't)? What about the size difference? Padding? If you do have both, which do you use more often? I really want a bag, but if I look at the website anymore with my sad puppy dog look, I'm afraid my husband is going to throw the computer away! Help!!