You can't go wrong with Starline.
I did check out their web site and all the companies they mention in NZ as distributors do not actually appear to sell their cases.
May be I need to check out their Aussie dealers.
I have read most posts (not all) on powders and the volume of info is quite staggering and bewildering
...information overload!!... so I am no farer on which which powders are better, one thing that was apparently evident (if I extracted the inferences right) is that Titegroup powder can be a problem with overpressure. Not sure if thats exactly what I read, but that seems to be the general gripe people have with it(?).