Gogs wrote:
Having purchased some interior paint they claim that it should only
take one coat but after one coat, its clear that its going to need
two.

Now this is a light paint of a good white base yet there is no chance
one coat would do it.

So my question the paint they do that is actually called 'Once' I
think.......is that any better as I have heard some people say you
dont get away with one coat.

Anyone any experience of using it?

Thanks

You seldom ever get away with one coat of paint. By far the best
covering power of any paint I have ever used is Farrow and Ball.

Thats only takes two coats as against the generic 'one coaters' that
usually take three.