From what I have seen of my New Standard and an aquaintance's Yeah Baby, the primary advantage of these balls is their incredible hitting power. It is on a par or slightly above that of Brunswick's Activator that I have seen in the Inferno, the Ultimate Inferno and my own Intense.
Out of the box, both NS and YB seems suitable for most people for medium to heavy oil, unless you have some unusual drilling on them. The YB goes a little longer than the NS, but wil then cover 3-7 more boards, depending on oil and bowler's release.
One fascinating idiosyncracy of my NS has been when I polished it, very lightly, using Legends' own polish: I got a large number of feet of greater length. As per usual, with such a modified cover, you need to find a little dry for the ball to make the turn. Normally, out of the box, the NS does not need to find any dry - it will make the turn.
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