Witty Rejoinder said:

I got a Woolies email offer to save $30 on a $150 shop for an online order which I took them up on. I can report that Woolies home brand Cola Sugar Zero 1.25l is terrible. Coles Que Diet Cola for the same price is very palatable.

It was very good, but a couple of years ago, they changed the formula a smidge and completely and utterly ruined it.