I use a Helle Odel. It is very lightweight and very very sharp!!

http://www.youtube.com/watch?v=bXVzMYHrPeA
http://www.youtube.com/watch?v=VUNkXXiMvc8

It's more of a traditional Nordic bushcrafters knife than the tactical recon runaway runaway live to fight another day Super Army Soldier type knifes, which seem to be pretty popular today.

Fallkniven (F1, A1, S1 etc) have some nice knifes as well being very functional and reliable survival knifes.

http://www.fallkniven.com/en/shop/category/24/fixed-blades/survival-knives

Again these knifes are of a laminate construction.