It depends on the coin, if you want to sell it or invest. Fro the current situation right now of the market most of the coin are on its low value but if you know that the coin has a good future you can invest on it or hold it because the time will come it will rise again
in cryptocurrency market there are more than 2000 coins/token .if we could pick the best one of them i think its be great opportunity for us.moreover sleeping giant coins that have huge potential in future.its has good roadmap and developtment but they still lack of investors.and need support from investor.maybe investing in this kind of coins give us profit.
I wouldnt be among those that would go for anything less than the top hundred coins. Others coins are not really worth the investment, cause they usually dont make it at last, you will see some getting off the market at last and there will be no way for investors to recover their money not to talk of losses. So if you want to be safe, its best to be on the top hundred list.