I have the Kata dr-467 and really like it. It holds my Nikon D300, 17-55mm, 70-300mm, 35mm, 50mm and 10.5mm with room up top for the small things and extras you need to carry like rocket blower, filters, memory cards, and a few personal items. Its comfortable on the back and shoulders to carry when fully loaded and also fits under the seat on all the planes I have been on. Its also under $100 at about $80 from amazon.com. The 467 has the laptop sleeve in the back. If you dont need to carry a laptop there is also the dr-465 which is very similar to the 467 without the laptop compartment.