It’s hard to say without trying both cameras. I loved my Rollei S, it’s one of the best-made cameras out there. MiNT won’t have the same tools or materials to make a camera, but it’ll come with some very nice automation features.
So if you’d prefer a point-and-shoot camera with the same form factor as the original Rollei cameras, you may like to wait (perhaps wait for someone to review it as well).
Otherwise, you can’t go wrong with the original S. It’s really good.
Dmitri