Wilson US Open or Slazenger Wimbledon tennis-balls?

Question

I can't take the decision of which type of tennis-balls I shall invest in. Does anyone know some differenses between them.

Thank you!

Answer 1

I know it says "ALL SURFACES" but it would really be nicer if you used the Wilson ones on hard courts and the Slazenger ones on grass, its what they were really made for but altered a bit to suit other surfaces.

So, you should invest in the tennis balls that fits the type of court you play on the most.