Best Small marketcap privacy coins

[ashapasa]

I have been investing in small market cap privacy coins hoping they might grow to where monero and zcash are at right now.
I hold a little Navcoin, Zcoin , spectrecoin and am now thinking buying a little zen.

Guys which of these or any other small marketcap privacy coins have the best chance to grow big.
Please let us know the coin and your reason for buying or mining it.

Also are these coins overpriced currently because three of these coins were below 5 million market cap just two months ago.

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[Charloz24]

Can't be really sure if all the alts are overpriced right now, maybe, but there is a big chance that we are in a new era. If this is the case, then no they are not overpriced.

So my position on the one that has most chance to come really big: ZEN

[___crypto___]

https://www.coinexchange.io/market/SUPER/BTC

https://bitcointalk.org/index.php?topic=1351548.1260

[CoinCollector006]

Zencash is a decent choice for a privacy coin since it combines the governance features of Decred and the master nodes of Dash, but you could also consider Boolberry (XBB) at a $2m market cap based on the CryptoNote technology.  XBB was delisted from Poloniex a few months back and its still trading at a fraction of its former value.   
 
https://coinidol.com/altcoins-delisted-from-poloniex-are-not-dead/

XVG is another privacy coin that has been touted on this forum, but its already had a tremendous run from the 5 to 8 satoshi range which makes it risker for new investors.