I mean both of them are great but I mostly prefer 7k if I wanted to get lots of pp I’m gonna have to do those DT farm maps which I absolutely suck at and playing 4k can be boring for me sometimes
Doesn't matter what's better, I see it as just enjoying the game and play what you feel comfortable with. If you want PP though 7k is usually the more efficient way of getting it compared to 4k.
I don't have favorites but if I had to choose one to play for a lifetime it would be 4k because it's the one I'm used to the most, as far as 7k, even if I don't play it, I still think that you can be surprised in many ways