I would happily say that SURE tokens has brought me a happier profits. When the value was normal, i used to buy and sell SURE tokens in COSS and IDEX. I almost earned $1000 in 2 months. Really a good money with zero investment. The coin which brought loss is PXY (Playgame). I was seriously dissatisfied with this coin.
Previously during year 2017's legacy on altcoins, I've invested airtoken which I bought from trading site. This provided me huge profit during December which ultimately bitcoin soared very high of its price. I sold airtoken in exchange to btc which I hold, then took a profit of about $3k which I used to spend on my house improvements budget.