How much of a difference does plasterboard make? We went through a HIA display and came across Gyprock Supercheck, which sounded good (more dense, harder to damaged/dent, better acoustic features, etc). However, we have subsquently been told that it's not worth the money and we'd be better off doing regular plasterboard with rockwool inside the wall cavities (cheaper and more effective).
Is this true? We have no idea so it's hard to figure out what's right and what's not.