For me, that had to be Ripple. I traded for 100%+ thrice and still holding a position at $0.40.
My next coins are:
1) Ripple
2) ADA
3) Bitcoin
4) Ethereum
What's yours?
you got yourself a serious list , they all do very well but for me , the token which brought me the most is my 80.000.000 dentacoin DCN which i had earned for signaturebounty in january 2018 , i bought my house with them