I have always thought technical hoodies made very versatile pieces. I use thin merino for base layers (Ibex) but prefer light fleece for my general purpose midlayer for the weight savings (the merino pieces like the Shak tend to be heavier).
1) Does anyone know how the Patagonia R1 Hoody (98% polyester 2% spandex) would compare for warmth with a Powerstretch Hoody, which has nylon mixed in to aid with moisture management and a little wind resistance? I have an old R1 top, not the hoody, and the material is a little denser and heavier than a polartec powerstretch zip top. The material used in my R1 from several years ago is the same mix as the material Patagonia uses in the R1 today. I find that R1 zip top is a little warmer and heavier than my powerstretch zip top, but less wind resistant (though the powerstretch top is not highly wind resistant and I always wear my Patagonia Houdini wind jacket with it in windy conditions.
Note that there are different types and thicknesses of powerstretch with different percentages of polyester and nylon and stretch material. Generally, more polyester is warmer while more nylon moves moisture better and offers more wind resistance.
2) Can anyone recommend a merino hoody that offers the same warmth for weight in the same weight range (around 9-10 ounces) as the Patagonia R1 Hoody?
A good light hoody is an item I'd love to add to my kit.
Thanks for the very informative post.

