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?
the profit i ever got was dicryto in 2017 on Alt etherum, the profit i got at that time was 2x the price i invested, on TRX and Binance i got profit in short term trading, and it can help me fulfill my needs want.