NPXS would be good based on my own experience yet im doing it now its being hyped up and the volatility is good where a scalper can able to utilize such movements but i would tell if you dont have any skills or idea on how to scalp then better not to proceed because this is the most riskiest way on making profits you are dealing with short timeframes but talking generally when you do seek out for coins then always select out to those who do have a big volume inside on 24 hour period.