Flattest Hydration Bladder

[Boothill]

i am looking to replace my hydration bladder and am looking for something that has the flattest lay or least amount of bulge when full, the one i have now turns into almost a completely round tube when full and is uncomfortable in my pack

i was looking at the osprey hydraform bladders and wondering if they would be any better or if there is a good one out there for what i'm looking for?

boot

[RedneckRye]

The new CamelBak reservoirs have an internal baffle sort of thing that runs vertically and connects the front and back panels so it does not balloon out.
The hose also has a quick disconnect so that you can leave the hose attached to the pack when you pull the reservoir out to go fill it up.
Here is the link...
http://www.camelbak.com/sports-recreation/accessories/2010-antidote-reservoir-100-oz.aspx