Easily without a doubt Spectrecoin. I used to try to spread the name when the price was around $0.58 a couple weeks ago and the price is getting close to around $2. Heavily undervalued coin considering the supply and the market cap. Some of the features as you can read in the previous comments are on par, if not better with some of the best private coins on the market. Buy now is my recommendation, my prediction for the end of this year is $100. Surprised to see the awareness of this coin growing so fast, just a few days ago I was accused of spam and now I see others advocating it. But hey, no need to trust me, you do the research and decide. Highly recommend joining the project's Slack. Here is a link for anyone that is interested:

https://join.slack.com/t/spectreproject/shared_invite/enQtMjg3ODQ5NTMwODgzLTUzNzdjMjk4ZDAzYWUzMTVhNDRhY2YwZGQ3MzkxN2NjMzgzZDBmNjYzNmEyZDBlZTAxODVjZTNiNWE5MzIxYmQ