Originally posted by sergysergy Lowepro Fastpack 350 ... One body (with grip if desired), 4 lenses, external flash and a number of small accessories in the bottom (photo) end of the bag. You could easily do two bodies if only one has a mounted lens. PC in a pocket along the back and a separate pocket for PC accessories (charger & mouse) and/or snacks. Shoulder straps, waist strap, and chest strap.
I personally hate using a back pack for my photo gear. I MUCH prefer my old Tenba shoulder & fanny pack case for rapid access to gear without removing a pack, plus a sling pack for walkaround goodies. But the Tenba was made before digital and has no place to store a PC. And you are only allowed one personal carry-on on planes and it has to carry all your electronics and double as a day pack when reaching your destination. Thus, the Fastpack 350. I'll be flying with it again in about 3 weeks.