I dont know which of the two is going to be more likely to have life.
Instead, ELF plans to collect from the geysers discovered in the year 2005 on Enceladus south polar region.
But Cassinis mass spectrometer can detect only relatively light organics.
So that moons ocean could be sampled during flybys, too perhaps by a mission called the Europa Clipper.
NASA is developing the Europa Clipper as a concept mission at the moment.
Recent estimates have pegged the missions cost at around $2 billion.
source: www.techworm.net
