Living in the pacific northwest, it doesnt get too cold, but it does get wet.

Couple questions if anyone is an expert on layering.

I have 3 types of base layers. polypro, merino wool, Polartech Powerdry.
I also have a pile of regular long sleeve jerseys and various 'dryfit' style long sleeve shirts.

Currently i find it too warm to wear both a base layer and a wicking jersey. I read that some pros wear a base layer inder a jersey even in warm weather due to the better moisture control.

Any idea what kind of base layer they would be using ? If i wear just a jersey, i find it cool. If i wear just a base layer, i find it gets wet with persperation. And so far havnt found a good base/mid layer combo that works well for temperatures in the teens celcius.

Anyone know any pros/cons of the 3 types of base layers available and which would be the least warming but most wicking ?