Top three worth looking into, that I know of, are:
Monero
SunContract
SpectrecoinTwo of them are solid privacy coins with sound technology. There is a strong case to be made that privacy coins will outperform all other categories of crypto in the coming months; no less of a legend than John McAfee agrees:
https://twitter.com/officialmcafee/status/941003398215761922Of those, Spectrecoin (XSPEC) holds by far the greatest potential for spectacular returns in the near term, as well as steady growth in the longer term. It has robust privacy and anonymity features, an active and competent dev team (including an experienced cryptographer), an ambitious roadmap, a vibrant community, and a circulating
supply of less than 21 million coins -
yet it is insanely undervalued at the moment, at less than $2 per coin.
Last week's price increase was the opening shot of a far larger catch-up rally to come. In comparison with other coins of similar tech, and given its low total supply, its price should already be $20-40 or higher.
Watch for the second leg of XSPEC's catch-up rally to be explosive.
You can find out more about this hidden gem here:
http://coinwiki.info/en/SpectreCoinCome join our vibrant and growing community on slack:
http://slack.spectreproject.io/