Sleipnir 2014 vs Valor

which is better in all aspect?
spin time, stability, swiftness, etc
I need answer, I wanto buy between those 2

There is no “best” yoyo, it’s all your preference, really.
You can’t go wrong with any of them.

Sleipnir is more swift for sure. As for the other 2 I’m not as sure.