I have a
LowePro CompuDayPack, and I LOVE it. I got it because I was looking for a combination backpack/camera bag for taking a photography class. It looks like a regular backpack to me and not a camera bag. It will very comfortably hold a laptop computer, (or a notebook and a textbook in my case), plus my DSLR, two lenses, external flash. There is room for
much more camera gear, but that is all I have for now.