I made a pullover and pants using polargaurd 3D, which is no longer available, and 1.1 oz ripstop fabric. From what I have read, the Climashield insulations are directly descended from the polarguard line, and my experience with various generations of Polarguard, both in my own use and having worked in mountain shops selling them, has been that they hold up fairly well - on the relative scale of synthetic insulations. I have not used any Priamloft, so cannot speak to that.
As to fabrics, unless you expect to be in pretty wet conditions and aren't planning on taking a shel jacket, i would skip the WP/B type fabrics and just keep it really light. The 1.1 oz ripstop I used is very wind resistant and has worked just great, at a light weight and low cost. If you want to spend a few more bucks you can get .9 oz fabrics that will perform just as well and be a little lighter.
One little detail - I did not quilt my insulation at all, it is just edge stabilized, and the has worked pretty well. I do notice some litle bit of shifting in the pants after a few years, but it is very minor. If you do decide to quilt your insulation, I would do it just to the lining fabric nad have the shell unquilted for a little bit more warmth.