I think the most profitable one this alt season will be COS (Crypto one stop) token from the COSS exchange. Basically this token had an all time high of 3$ and has recently fallen to its all time low of 3 cents. A new team recently took over and they have been progressing the exchange so much that people will be surprised when they come back to use it. I expect the token will go back even higher than 3$ soon. That will be a more than 100x return relatively quickly!