Before I ran out and bought something new, I'd try washing your gear in Nikwax Tech Wash to see if it isn't some old detergent residue reducing the breathability. Beyond that, base and mid layers are generally cheaper than shells, so I'd start there. My favorite stuff for either base or mid layers is Polartec Power Stretch. They also have a product called Power Dry that may be an improvement for you, which is what Patagonia uses in Capilene 3 and 4. You could also consider switching to a softshell instead of a hardshell when you don't need absolute waterproofness (and you generally don't, unless you're out in the rain or slush or wallowing around in wet snow).
Or maybe you're just dressing too warm in the first place. What kind of temperatures are you wearing all that stuff in? If I was wearing what you're wearing in anything over about 20F I'd be sweating my butt off, personally. Even the best technical clothing can only do so much. Overdressing to the point of serious sweating is going to feel clammy (and eventually cold) no matter what fancy clothes you're wearing.
Last edited by tigre; 02-12-2013 at 11:00 PM.