Buy to carry a 6D + 24-105 objectives; 70-200; and the small 8-15 this bag makes the job. I struggled a bit to arrange inside (but it is by this that I'm not very good) that is completely scalable with a large number of scratch separator. Note: You can even removed the separation between the top and bottom compartment to gain volume. Positives: spacious and flexible, comfortable, the attachment of really handy tripod, quite spacious upper compartment (useful for paper, telephone, remote control, batteries, cards & co) and must rain cover me already served several times against this :) by rain protection is the size of one bag, so unworkable if the tripod is attached to the bag. Negatives: zippers side openings that could be equipped with 2 sliders or instead of one, because once closed and the cursor with the weight tends to go up a little, leaving the open compartment of 1 to 2 cm. The rain shield that I have liked further holes or just to pass the cord and the pouch to attach the tripod. This is not really a negative, but good point, small strap on the side are a little too tight can not slip small bottle of water that's too bad, does it fix that with belt clip objects .
Product I recommend if you start accumulating a lot of equipment.
