As long as what ever they buy is value for money, are well built, reliable, meet current emission standards, have good manufacturer support / warranty
If they do buy new build locos one would hope they do there home work, these locomotives will be around a fair while so they need to last. What we don't want is locomotives that are not suited to our future needs.
Well know cheap rubbish just costs more in the long term, hello DQs - MKA's!
There are many good engine options around (look at the marine industry) and very good locomotive builders in Australia that provide good after sales support.