What is the difference between the double haul and the shooting star packs. All the information I have read on the double haul states that it works with the wind walker chest pack but does it come with a chest pack? The shooting star looks bigger than the double haul. I am looking for something that I can use to do a single night trip in. Is the big enought for a tarp tent and very compact sleeping bag? I am A gear nut so I have a miox water purifier and Jet boil so for a single night I don't need a lot of space. or am I looking at the wrong solutions.