I have just invested in some smart long term projects : 5 ETH in Orbis ( www.orbistransfer.com ) and 1 ETH in Pecunio ( www.pecun.io ). Do you have other suggestions ?
In my opinion, it is better to make your own research and trust your guts.
The most of the privacy coins are undervalued right now.
The best opportunity is to find a privacy-related project with a low total supply (less than 100M), that way the price will be increasing much faster.
I recently found one project called Ethereum Meta, it is related to anonymity and untraceable transaction. They have a very interesting project to build the Anonymous E-Market Place.
They are on ICO stage right now and already on the exchanges, you can check their website: https://ethermeta.com/
Or even better go through their Bitcointalk thread: https://bitcointalksearch.org/topic/future-of-privacy-ethereum-meta-foundation-of-anonymous-e-marketplace-2659058