Here's a few tips for TLZ75AW users--you can slip a monopod through the large belt loop if you are using it with a shoulder strap. Get the Deluxe Padded Contoured Lowepro shoulder strap--about $15.00 and very worth it! My gripped 20D with a 17-85 will fit inside the TLZ75AW with my Sigma 30mm f/1.4 under it (or vise-versa). I can still carry my 580EX in the front pouch. Or use my Sigma 70-200 with 1.4x T-con attached, hood reversed. I carry the flash in front pouch, and a Better Beamer along the side of the lens, and you can put some granola bars in there as well. There is a velcro closure on the inside rear top of the pack. I open this and slide my laminated Cheat Sheets for camera and flash in there. Often I will use a large lens pouch on one side (holds either the 70-200 when off my camera, or one or both of my other lenses (use a crumpled plastic bag between them--rain cover). On the other side I put an Accessory Pouch 60 AW that can hold my 580EX with external battery pack, or my Olympus C5050 and a flash--or put another lens case there and carry a water bottle.
For walking around motocross tracks, I have the Street & Field shouder harness and the deluxe belt. Very comfortable. It is somewhat incovenient to get at the camera when it is in the TLZ75AW because it mounts in the middle back. But if the camera is in there, it's not taking photos--so it is rarely there. I will put the same two pouches on the belt, plus two more for 1 liter Nalgene water bottles. The lens cases for water bottles affords lots of insulation. I freeze the bottles half full, then fill them to the top when I start out. Ice in the bottles lasts a long time in those insulated lens cases! With the S&F I can still wear a back pack or a hydro pack or both.
I recently purchased a Slingshot 300 AW. Very nice. It needs more pockets! It is awkward when additional pouches are attached.
I have a Rover Plus AW. It is huge--but I need to take it off my back to access camera stuff. I also need to take the 70-200 off the camera to store it, unless I rearrange the innards. Nice pack--carries lots of stuff up top. Belt is pretty stiff too, but carries the weight well on my hips. I attach lots of pouches on it as well. You cannot use the AW cover when a tripod is mounted on this pack. I normally use a monopod anyway and it fits in the top section.
Right now, I am torn between the Slingshot and my TLZ75AW system. Both work great and have their uses. The Slingshot doesn't scream camera as mucy as the TLZ75AW...especially when that has extra pouches attacted to it, or is part of the S&F system.
I may get a Crumpler type bag some day--don't know. For just flash, camera sans grip, and one lens, such as 17-85 with a Fong LS2PJ--an $8.00 X-mart insulated lunch pale works fine! And it doesn't scream camera!
Sorry about the long post--hope this helps someone.



