Personally I use the following pants from Wilderness Wear:
http://www.wildernesswear.com.au/Shoppi ... &retPage=1 but these would be more durable:
http://www.wildernesswear.com.au/Shoppi ... &retPage=1They are cheap, Aussie made and totally effective in my mind.
Here is a relevant exert from Roger Cafffin's FAQ:
'Some of the best material for long trousers is the textured nylon or micro-fibre nylon fabric found in the track pants available in Sports stores. The material is tough, windblocking, somewhat water-repellent (but it breathes in hot weather), dries very quickly, and long lasting. The better non-shiny fabric is often called Taslan or Supplex, but don;t expect to find that marterial in the cheap made-in-China stuff. Don't buy the versions which have a cotton lining either: that stays wet too long, gets too hot, and is too heavy. Or, if that is all you can find, neatly remove all the lining. Macpac used to make some Rockovers which we found excellent, but the design has changed and the result is more of a fashion item now. Sad.'
The full article is here:
http://www.bushwalking.org.au/FAQ/FAQ_Clothing.htm