I used to always get Pink Lady, but in the past couple of years I've found Kanzi to be better. And somehow my partner gets less allergic from Kanzi as well.
Their green skin can help with inflammation as it contains enzymes that protect T-cells. They're helpful to prevent diabetes and are recommended for diabetics to eat. They're high in phytonutrients and are apparently have the best antimutagenic potential of apple breeds. I think most of their benefits are shared with other green apples.
They've got high fibre content whilst being lower in sugar than other varieties and are good for gut bacteria.
However, the best apple to eat is one that you like as it's better to eat any type of apple than none.