Every trip I've taken in the past 3 years has involved 2-3 other people so I am always packing a Tarptent hogback which basically hogs one side of my pack but does help with quilt compression. After the tarptent is in, in goes a Hefty trash compactor bag as mentioned in another post. Into that goes my pad, quilt, pillow (yep), socks, long johns, etc. Push down, twist, and tuck the trunk, and the remainder of my stuff goes on top of that. The trash compactor bag is then used to air up our Klymit sleeping pads. I manage to put a hole in a trash compactor bag on occasion, but we have lots of pointy stuff out here in Texas and I tend to drift off trail on occasion just to see what might be over, under, and around things.
If space is more important I will stuff my quilt and clothing extras in a Zpacks dry bag… I think it to be the 'large cylinder'. It compresses and holds well.

