Had an Estock x2 and sent it back. It is a neat design, the main compartment is just a large open pocket.
It has 2 wings, one of either than a bladder goes in.
I also had the older DS (I have a bag issue!) I really wish MR kept the old style myself. I sold it off to fund something else.
If all you need is a day pack, looke at the 3 day assault. It has a lot of the features MR ditched on the new DS.
Or Kifaru X Ray or the Express.
And to add there are many quality "backpack" day makers out there.
Gregory, Osprey, Granite Gear, Deuter, etc.
