Break Down
Schoeller makes Dynamic, Dryskin Dryskin Extreme 3x
Malden Mills : Powershield (both Reg and new Lighter Weight Vers)
There's also EPIC by Nextec - get to that in a sec
Arctery'x Gamma LT stuff used to use the Schoeller Dynamic (I have the pants and they're great for warmer weather) Their new MX line uses the lighter version of the Powershield
REI Uses the heavier Powershield in their "One" JKT and the Shoeller Dynamic in the the Mistral stuff.
Cloudveil, Mammut and Marmot use the Dryskin Extreme 3x in various products Ice Floe, Serendipty Jkts, Champ Pants, ATV Jkt
Champ Pants rock for most conditions and are ergonomically cut to boot.
Patagonia uses a proprietary Powershield for their Core Skin seires (checkered fleece inside ala R. series instead of straight fleece) Their Guide pants and Dimension Jkt both used a version of EPIC fabric.
Schoeller fabrics are a "weave" style soft shell. They tend to be more breathable and flexible than powershield.
Powershield (both thicknesses) is a laminate. The outer layer is the stretchy DWR coated part laminated to fleece inner section. These tend to be more weather and abrasion resistant but sacrifice some breathability and stretch for it.
EPIC is an encapsulation process in which individual fibers are coated in a "rubber" before being woven together. Falls somewhere between the other two in functionality.
I have and have used all three and found they fit different uses well. Champ pants (Dryskin Extreme 3x) and Dimension Jkt (EPIC 7oz) are my faves
There are new ones out there like Trango by GORE but haven't had a chance to test those yet...