Alright, so I have a SlingShot 200 AW right now, but i'm growing out of it. It's alright if i just have a camera with like two smaller lenses, but anything more than that it starts to become impractical. Also, after wearing it for a few hours, it gets to be really annoying (being a sling bag and all). I want a new bag (backpack this time) that can hold all my lenses and gear. Here's what I've got so far: Nikon D50 Nikkor 18-200 VR Nikkor 18-55 Nikkor 50 f/1.8 Nikkor 80-200 f/2.8 Sigma 10-20 Tamron 2xTC Nikon SB-600 After christmas I'll probably have another flash (SB-800 most likely) I was looking at the Lowepro Flipside 400 AW, but wanted to know what you guys might suggest. I want something that I can comfortably fit that gear in, but doesn't feel like i'm carrying around a duffel bag on my back. I don't really need to have any kind of laptop holder, as I usually don't carry it around with me.