Hey everyone; After three years of constant use, my current camera backpack is starting to show its age. I'm looking for a replacement that has the following characteristics: It must be a backpack. I'm not interested in a messenger bag or shoulder bag. I might consider a sling type backpack, but I prefer one with two shoulder straps. It should be large enough to carry the following equipment: Canon 400D with grip, 100mm macro, 50mm f1.4, 10-20mm UWA, 68mm of extension tubes, an external flash and a ring flash. It should also have extra storage room (like a top compartment) to hold assorted things: a light jacket and small lunch, for example. It has to be comfortable and durable, and water-resistant. This is very important. I plan to take this hiking (long periods of time) and camping on very rough terrain, and it's going to be used and abused. Having a rain cover would be a great plus. It should be discreet. While I value style, I prefer function over form, and dark/subdued colors. And finally, price. I would like to spend less than $200 on this bag. If you have any recommendations, I'd be very happy to hear them! Thanks in advance.