I say try the Brightline bag. I've been using the B4 model with the water bottle side pouch and the hard handle made with grooves for the LW J-hook. This set up works for me as I use the Clarity Aloft headset, carry two tablets, back-up battery and a small generic case that fits inside the main compartment that holds all my charging cables.

I've had this for going on two years and even though I commute it's still in great shape.

Edit: Sorry I quoted the wrong post.