I come up with some bearings like Terrapin swing cut, Dif-e-yo konkave and Onedrop 10-ball bearings.
I mainly play 5a yo-yoing and my throw is a YYJ Destiny!
Honestly I don’t want the original YYJ Speed bearing
KKs and other string centering bearings help with stability which will help in 5a.
String centering bearings are the way to go for 5a.
Personally I prefer KonKaves but plenty of 5a players use CenterTraks.
So, does it have a noticeable difference between a konkave/centre track and flat bearings? Personally I really love the terrapin bearing but I don’t know how good terrapin bearing can help centering the string.
I’ve had a bad history with kk’s for yoyoing in general I personally love center tracks