Long term investment aside of Bitcoin- Altcoins that are low priced with good marketcap
- Altcoins in the top list of Coinmarketcap
- Altcoins listed to the top exchanges
- Altcoins backed by exchanges
One more indicator: price chart show long downward trend, and price has been very stable at low range within recent months, with volume decreased, then stable too. Volume should be stable recent months, but there are significant volume to invest. Because there is stupid to invest in coins which have nearly zero volume per day.