This is my choice [for the rough work].
http://www2.fiskars.com/Gardening-an...h#.UJ_ReYdZWyg
I also have a hand-held brush hook [Fiskars]
edit: --brush hook--
http://www.amazon.com/Fiskars-7860-B...ef=pd_sim_lg_4
A good Bowie for where I don't hit rocks
and dirt and stuff by mistake.