I switch between my Ego and Imago most days and I'm pretty happy with both, but there are some times when I'd like a bag that takes up the least amount of space possible to carry just the essentials without worrying about it bumping into people and things in crowded cities and stores or where I'm going to stash it at dinner. It sounds like the Ristretto is the way to go here, but I'm not sure which one to get.
Here's what I'd be carrying:
Backup battery pack about the size of a pack of cards
Is the iPad Ristretto enough to carry this? Or would one of the larger ones give me a little more volume and room?
(You'll see from my signature that I do have a Buzz, which is a great low-profile bag, but I'm looking for something I can carry when I'm dressed in such a way that a sling bag would be impractical.)