all sixes

all sixes ( if something is all sixes, it doesn't matter how it's done; ) — все равно; без разницы; нет никакой разницы

Also
six of one and half a dozen of the other' — to amount to the same thing, to make no difference.

Example: You can either meet us before the show for dinner or afterwards for dessert. It's six of one, half a dozen of the other. — Можем встретиться с тобой перед концертом или после. Мне это без разницы.