With the strick knife laws in Australia I get by with the Swiss Army Camper. It's pretty good. I like the saw and the second little blade is really handy. I thought it was stupid that it had a key hole to tie it to something, but when I lost it the first day of a hike it, i then appreciated the key hole. I liked it so much that I bought another when I got home. It's always attached to my backpack.
With the snakes, spiders, and heat being the biggest killers over here, I don't need anything too big or flash. I sometimes take a machette to help with the lantana.