I researched backpacks before getting mine. Wound up with the Sequence, but had to order it since non of the local shops had either brand to even look at in person. Mine came from www.glassandpowder.com
So onto the pack itself. I do like the way it stays with my body so far, but have not tried it yet on my MTB, or any serious hiking as I am just able to walk again. The pack can barely hold a fleece in the top, and a laptop in the far outside pocket if it is thin and fairly small. I use a Stink Pad T41 and have the IBM neoprene cover and it fits fairly tight. Remember this is right where you lay the pack down to get the camera out, so the laptop is pretty exposed. All the straps need to be cut down, as they flop everywhere. There is enough room for the items shown below. At some point I will be adding a 60mm lens into the mix, so it will be a pretty tight squeeze. There is room for a battery grip, and by removing the padding and using lens covers by Lowe Pro, or something similar, there is enough room to include more toys. The size is nice in that it is compact, but it does not really leave much room for added stuff like a Camel Back. It does have a place for a water bottle and the other side has a pocket and a place to hold a tripod. They do make another backpack that can hold the camera block too. The camera block is another nice feature that I like. Often in the car, that is all I bring. Kinda like having two camera bags in one.