ONIX Fuse Indoor pickleballs have always been considered the best indoor ball for playability in Australia and have been the indoor tournament standard. They can be prone to cracking below 18oC - see below.
The precision-drilled holes guarantee perfect balance, and a larger hole pattern and less bounce make them perfect for indoor courts such as concrete and gymnasium floors. Approved by the USAPA, they're the best choice for playability.
Mypickleball's note: These balls can be prone to cracking below 18oC. Workarounds: Educate players to warm the balls up before play by dinking them before any hard drives. Switch to Onix Fuse G2 OUTDOOR pickleballs as Noosa Pickleball has done. Switch to Wilson Tru32 HYBRID indoor/outdoor pickleballs as eg. Willoughby, NSW and Bendigo, VIC have done.