Have a look at the Comforser CF1000 ATs at
http://www.huntsmanproducts.com.au/
I've got the CF3000 MTs on mine and have been really impressed with them considering they are a cheap Chinese brand. I did a lot of research and ended up buying these after I couldn't find a bad review on them.
The brother in law has the CF1000s on his Colorado ute and he is impressed with his.
I'll probably go the CF1000s myself next since I'm mainly on sand. I live 10 minutes from the Watagans but unfortunately don't get in there as much as I'd like.