The company is around 15 years old so they are still fairly new. It's parent company has been around for much longer making OEM parts, it seems. At least that's what they want to tell you.
In the US, you never really hear about them. Only thing out of AU is ARB, OME, T-Rex, and Man-A-Fre.
What you need to do is get spring rates for each spring. Also you'll want to find out if they have different ones for I4's and I6's as well as hardtops. Then compare them with other brands.