Here's an interesting question!

[fokai73]

For sport condition - HyRoad.

For THS - Tropical Breeze

[foreverincamo]

My DV8 Ruckus Schizo. It'll play ok outside if it's oily, and does well swinging it when they aren't

[jab5325]

Storm Rocket. Although it's not my "favorite" ball, it's pretty versatile on all patterns.

[LyalC52]

RG Hy-wire, by far the most versatile ball I have
a close second is the Storm Hyroad

[ChuckR]

Brunswick Melee Hook. It takes surface modification and maintains excellent follow through.

[taxexpert2]

I would have to go with Storm HyRoad or Roto Grip Unhinged.

[Tony]

I would go with the HyRoad a proven ball, came out in 2008 and is still being made. If there is one ball everyone should have in their bag this is it !

[stargell1]

Hammer scandal

[mishatx]

I only have one ball, so I'll have to go with that one - Blast Zone

[LOUVIT]

I only have 2 but I like my Track Heat....