I have KOM, Woolrich, some military, and a couple shirts from old mills no longer in business. It is all better than cotton or the techie stuff...period.
BUT...all wool is not the same and all weaves and processes are not the same. Think about how your body reacts to varying levels of activity and comfort. Walking casually, under stress, or sitting in a stand. Choose the peocess and weave that works best for you.
Long fiber wool dosen't "itch" as much as short fiber. Merino wool is smooth and soft as a babys bottom but dosen't make good outter wear. Crushed wool blocks wind but dosen't breath as well etc. etc.
If you sweaty easily you want to wear something that breaths easily...a looser weave. But...you may feel the wind blow through it. If your sitting in a stand you may want a crushed wool as it blocks the wind better but you may sweat more getting to where you are going.
Personally I prefer a looser weave with a external windblocker (heavy vest, dry plus rain gear) if it is real windy. but that's me. I have a friend that wears a filson Mackinaw that I would roast in walking about. He's older..might have circulation issues I don't know about.
Don't be afraid to actually LOOK at the fabric and talk to the MFR about how they make thier garments and what type of fiber and style of weave is being used.
The idea is to regulate your body temp. Not be cold, at the same time you don't need to be hot either, you want to feel like you are sitting in your living room, dry and comfortable not cold and damp - from sweating.
Don't forget the silk underwear...tops and bottoms. Nothing pulls moisture better or dries faster.