I am having to use my 08 for commuting purposes due to moving about 25 miles further away from work. I normally stuff things in my backpack but after awhile my backpack is falling apart. I normally carry my laptop, gun, and a change of clothes on my back. The question i have is what is the largest capacity tank bag available. I would like to have as much capacity at possible without looking like i have a trunk in front of me while i ride and not obstructing my view of the gauges. Any information would be greatly appreciated!