We run Hostmann Steinberg Impression series on our large format presses and Best One (Toka?) on our smaller machinery, and at my second workplace we run Toyo Hysin i think it is called...all pretty good inks give us no particular problems, tho the Hostmann tends to "fly" a little on the press meaning some cleaning of inking covers is required at end of shift...
D Ink Man... do Aranon have an Australian vendor? i dont think we would change but its always beneficial to try different inks, sometimes the differences can be amazing... we also use approx several tonnes of ink/month...
Just get on with it. Its as simple as that.