Baby Formula

Im In Australia Im pregnant with my fifth child and I wish to bottle feed again. Its been 11years since I have had a child and the amount of formulas available have blown my mind. We have so many formulas available I don’t know where to start I know Australia has strict guidelines and all formulas pass them I just want to know what other mums recommend something that will agree with bubs, wont break the bank but I don’t want an issue with supply either.