Basic arena, better to grind with 3 or 4*?
So I'm wondering if it'd be a better strategy to level up a bunch of 3*s to the max or level a few 4*s to like r3, r4 or something? 3*s are much cheaper and I could have a lot more of them but it'd also take more time to grind for points than 4*s do, which is the better strategy? I really want to be able to get into the top 1-10% easier.