I find the Ice Breaker stuff incredibly over priced but then it is also constantly on sale here in NZ as new stuff comes into fashion...
Icebreaker
is expensive when you compare it with the obvious alternatives but I honestly think that the comfort benefits of Merino make it worth the extra cost.
I own a few of the Superfine (190) t-shirts, which I use as a base layer and, I have to say that I'm glad I did. They're really comfortable, dry very quickly and resist odour fantastically well. The only downside is that, with the fabric being so fine, they're somewhat susceptible to holing if subjected to rough treatment.
..suitable for walking/hiking in the woods, keeping me dry but also keeping the sweat off of me.
I do some climbing (a sport where it's not uncommon to work up a sweat and encounter cold and rain) and the outdoor clothing industry has been busily beavering away over the past few years, coming up with some concepts and products which present alternatives to the traditional base-fleece-waterproof system of layers that you mentioned. The criteria you mentioned make me think that you should take a look at some of these, particularly the "softshell" concept, which is designed to replace the traditional "hard shell" (e.g. Gore-tex) jackets with something that's more breathable but not
quite as waterproof. If you're in amongst trees (i.e. somewhat sheltered from both the rain and wind), you probably don't need the same level of water-resistance that you do if you're trudging up the side of a mountain straight into the driving wind.
It's worth looking beyond the obvious brand names because some of the smaller, slightly more niche companies, like Paramo and Rab, have come up with some interesting products.
For example, I have a Rab Vapour Rise Trail jacket, which has a brushed micro-fleece lining that's designed to wick moisture away from your skin, with a wind- and water-resistant outer layer. It was apparently designed to be work with nothing underneath it but I wear the aforementioned thin Icebreaker t-shirts as a base layer under it because I found that it got stinky quite fast if I didn't. It's a really comfortable combination.
I'm a big believer in doing a lot of background reading when considering a purchase like this and the trick is finding independent, unbiased information which presents background information and facts, as opposed to trying to get you to buy something. There are some very good articles on this website -
http://www.psychovertical.com/?clothing - which are blessedly free of any marketing bias.