Which privacy coin do you think will out last the rest in 2018? And why?
Monero (XMR)
ZCash (ZEC)
Navcoin (NAV)
PIVX (PIVX)
DeepOnion (ONION)
Verge (XVG)
Spectrecoin (XSPEC)
Sumokoin (SUMO)
For me Zcash and Monero are the altcoins with the great privacy. I also suppose that NEO belongs to this list; Bitcoin can be not called the safest one. Here is also a video, telling you about the other top privacy altcoins this year:
https://bitcointalk.org/index.php?topic=2851751.msg29259532#msg29259532