ISO: The Perfect Bag ...

[jujubees]

So I'm in this awkward situation with my bag. Every day, I need to carry two sets of keys, my wallet, a book, sunglasses, and miscellaneous doodads (cd's, candy, gum, etc.). My backpack is too big for what I need to carry, and my purse is about the right size (except for the book), but it keeps slipping off my shoulder when I wear jackets.

What I'm looking for is one of these "messenger sling" bags, but I can't find one to my liking at ebags. I want it to be black, square/rectangular, with a flap, zipper on the inside (so I don't have to pick up my stuff from the sidewalk after taking a nasty fall from my 3" platforms), and is big enough for the occasional hardcover book. I'm picky, I know.

Any suggestions about other ebags-ish online shops? Thanks in advance for any help!

Here's what I've been looking at from ebags:

Too small
http://images.ebags.com/images/Products/7541_sq250.jpg

PERFECT, but doesn't zip on the inside
http://images.ebags.com/images/Products/7538_sq250.jpg

Basically, I'm looking for something like this, just ... not ... so ... fugly.
http://images.ebags.com/images/Products/2044_sq250.jpg