G'day. Firstly, being that you are in NSW, you will need a 2BC Security Industry Licence and must be working for a Locksmith company to purchase lock pick sets from either a Locksmith supplier or if you get them via the internet then be prepared for nasty Customs letters and potential confiscation of what you order.
Secondly, it isnt really the picks that work well but the skill of the user. A Hook pick made by HPC, Majestic, SouthOrd or Rytan etc etc, will all work the same ( relatively ) if the user has the appropriate skills and tension / torque tool.
In terms of price ( if you are a Locksmith ) the Majestic picks are slightly less that the Rytan or HPC products, but I have used all abovementioned brands extensively and can say that there isnt much difference ( only really in variety and cost ) in actual use.
Or you can just make them yourself, there are plently of sites and links dedicated to home made picks etc.
Good luck ( only if your intensions are good and you are a legitimate practicioner of the Locksmithing craft ).
