I have a 1.1 DL BB and I am very comfortable in it. The lay is very flat and I don't notice any sagging or stretching that makes it uncomfortable for me. I am 170 lbs however. After talking to Brandon, he suggested it since at the time, I did not know whether I would be using padding or not. I ended up using UQs and/or a pad in my hammock so it is no longer an issue. Poly is known for not being stretchy so will lay flatter but whether there is a noticeable difference between a single layer of 2.2 or 2.3 and a double layer of 1.1, I would not know. I am still considering whether to go with a 1.8 oz nylon taffeta or the 2.3 poly/nylon blend.. at 170 lbs, would I really notice a difference when one is rated at 250 lbs and the poly at 265... I would save 3.5 oz. The poly is supposed to be more hydrophobic and moisture wicking, the same as with clothing, which is intriguing when it comes to condensation but if you have an UQ underneath, I am not sure if that is a good thing.