replace core for zhanci?

[nupityS]

should I replaced the zhanchi core with a "better" core?
and if I should, which one?

 

[Vinny]

Why should you? A lot of people say that replacing cores is somehow amazing, but it's not like it helps out a ton. Simply tensioning your cube perfectly to your preference and lubing it will make it good enough to the point where it doesn't really need improving at all.

 

[Cheese11]

I've done many tests and it seems that Dayan cores work the bast in Dayan cubes...

Hmmm, I wonder why?