We're getting two types. The MH-60R and MRH90...
Read again the last two words in my post.
And yes, as a compromise, the 'S' fitted with removable, modular ASW kit would probably be the better choice for the RAN with its very limited size (and budget), but I understand it has a few shortcomings like its tailwheel being a little long for the restricted decks of some of our ships.