"CUA have a 3 year fixed for 4.84% with 100% offset and...

"CUA have a 3 year fixed for 4.84% with 100% offset and unlimited repayments-can't go to wrong with that!"

That could go very wrong if the RBA is forced to follow other major central banks by cutting rates to near zero as part of the global debt deflation. Then investors would be locked into paying high relative rates while their investment declines in value and they fall underwater (negative equity). And this scenario seems the more likely outcome over coming years throughout Australia.