For a lighter, warmer, less expensive, more weather resistant jacket, check out the Editors' Choice award-winning Rab Xenon X. This model has a lightweight Pertex shell that offers greater wind protection than the Nano Puff Hoody's quilted design.
Patagonia Nano Puff Jacket has no hood and is a little lighter and less expensive. Without the hood, it's easier to layer under other hooded jackets. For example, it much easier to wear under a ski jacket. It also just looks better around town. Both models are classics although the hoodless version is probably the best selling insulated jacket of all time.