Thanks for the input, though it got off a little about wool, vests, windbloc, etc. (Probably my fault for post title.) Not really the question as I wear vests, wool, windblocker, and fleece-and as stated I stay warm.
I was more curious of any experience with a nylon vest like down or prima loft. I was particularly curious after I saw the backcountry vid posted here on the Gang. Again, my personal experience (and VERY limited) this fall using my vest as an under-layer makes me wonder if the nylon kept my body from breathing well. I sure got cold and clammy that particular day.
Also for what it is worth- not ALL windblock and design is the same. I have looked at many of the Cabelas items and I too think they are far too noisy. HOWEVER- I am VERY impressed with my Predator Jacket (which the designers claim they have a different approach to it). It is DEAD quiet and works. I am also VERY impressed with my DayOne insulated fleece vest with windblock of some type.
Thanks for all the responses
Dan