I had a choice of Earth (Defense to a family) or Dark (Magic Evasion) that capped at 3 Strength.
Darkness with a cap at 3 would give me Magic Evasion against Birds and Empty mobs, which pretty much a waste. Ended up just going with Earth and putting Defense on for the largest family, seemed to be my best bet so far, until better Evoliths or options are made available.