Thermal pants? What to choose?

We use Icebreaker merino wool thermals, use to have the cheap synthetic stuff years ago when there was not a big choice here in Australia.

After changing to the Icebreaker merino wool ones the difference is phenomenal, much better temperature regulation, more comfortable and does not stink after a few days like the synthetic ones.

The art is to layer to get the desired result.

Any quality merino thermals will set you back 10 times more but are well worth it.

Good quality beanie, gloves and a jacket are well worth it.

Nothing worse them being cold and wet when away.

Mountain designs have got a sale on at the moment.

You'll pay $70 odd for the 80wt merino thermal longs but they are worth it. polyprop overheats and you end up having to strip off. As stated you can wear merino for a week and they still wont smell.
If you don't mind the sleek look, we have started wearing our thermal cycling 'legs' out hunting with good results. They retain heat when wet, don't attract burs like thermals, and can be simply pushed down when you heat up. Lots of cool retro reflective tape for the rescue chopper to look for at night time too, or lots of nikko to black it all out for hunting......
Torpedo 7 website does NZO merino t shirts for about $30 on sale. I wear one quite literally all winter under everything - the most comfortable thing I own.
I just grabbed a mountain designs 240+ merino hoodie on sale for $180 (half price) which is a bargain for this weight gear. Once you are a convert you wont wear anything else.
Look to end up buying 3 good quality layers and never get rid of them.
Oh, and Teko merino socks rule - expensive but awesome.