In the DCnU, probably Neo-Sapiens.
I actually think that the Century Babies are way more interesting conceptually in their original form, but when they made the jump from WS to DC t5he concept was incredibly muddled. Both Cornell and Milligan apparently confused "Century Baby" with "Spirit of the Century" *, which limited what can be done with them. A lot.
*For those who donīt know the WS universe, there`s ONE spirit of the century, who is a century, and several century babies with different functions. Kinda like "Earth`s Immunological System".