SXC cos it's got a porn blog at porndatabase.co.uk starting up which is not by the dev team and fits the niche of the coin well. Soon you will be able to earn SXC for watching porn also, which is also unique among the new coins.
Not to mention, buy blurays / dvds and sub to the networks like brazzers all using SXC, arriving September!
no one gives a shit about sexcoin, ever. I vote JupiterCoin out of the most recent batch of alts. The batch before that i think the clear winners were XPM and NAN. whoever made those coins did good jobs. i suspect both had large dev teams
Maybe someone will someday.