Unless someone can suggest a better option, for my circumstances, I will be reverting to using my "free for life" (so I have no costs to use it) Citibank Gold VISA Card.
Note that the free for life offer lapsed long ago.
It earns at 1 point per $, which transfer at 0.66 to KF. For me 0.66 to KF is much better value than 1.00 to QFF, as J Savers on SQ, or J *A Awards, are much better value.
However Citibank does have some bonus partners., and so that can boost earn. Was good when JB HiFi was awarding about another 4 bonus points per $ for example. The number of partners is currently quite limited though.
One negative is you can only transfer in lots of 15,000 points. No biggie for me as I would eran that ina year or less (most of my spend goes onto Amex where possible and viable).