The drop bears can be pretty nasty though
http://www.cfr.com.au/dropbears/
http://www.cfr.com.au/dropbears/
I have always be interested in the 686 as my dad carried one in Vietnam,
Johathon- No bears (plenty of beers though) and there are a few crocodiles. I don't know which would be worse. I'd say that a 15ft salty crocodile might have the edge - they take no prisoners.
I have a 6" 586 and am absolutely delighted with it; wouldn't sell it for the world (don't know if I'm making any sense here or no, 3 sheets in the wind ) I'm thinking the .44 mag is a bit of overkill like some others here, but I'm also thinking it's going to boil down to personal choice (thank God for spell check )