Best Zen yoyo

So I was browsing YYE today, and I came across Shinwoo’s page and realized that there is 6 Zen yoyos!! But my question is, which is the best?

I’m not sure about best , but the zen2 is pretty cool. I got it when it came out.

Personally I like the fast play of the Zen 4

Agree, I have a Zen 6 myself, but i like my friend’s Zen 4