Rather like "I will be getting my pilot's license- what aircraft should I get?"
Depends. First what can you afford, what can you GET where you are, and what did you want to DO with it?
Hunting? Slow fire target? Cowboy action shooting? Self defense? Do you want a .22, or a .500 S&W? Auto or revolver?
In general, Smith & Wesson, Colt, Ruger all make very good revolvers (and would add a well made but often overlooked Dan Wesson to the mix). Autos? Take the above, add Glock, SIG, and a dozen other high quality makers.
So- what do you have in mind for use, what is your budget, and what can you get there "down under"? Do you want to punch paper targets at 25 meters, or knock down rams, chickens and pigs at 100?