I prefer long-term investments. However, I feel in the Crypto space, a few months is considered long-term. Usually, projects need some time to see real adoption and deliver major development updates. Minor pumps may happen in the time-span of just a week, but it takes, at minimum, a quarter or two to see some real progress.
I picked up a new coin called VEIL about 10 days ago and it's moved up from 26 cents to 31 cents since then. As a short-term trade, it's already quite good for me. However, I know the project team is working hard to deliver the most advanced privacy coin to date, and given that it's being led by the founder of PIVX, I expect some decent partnerships will roll out once development has progressed deeper into the roadmap. Considering these factors, I feel the upside potential of a long-term hold could be good.
So, you should do your own research in your holdings and see which one of them has a good upside potential.