Bitcoin and ETH is the great for purchase and hold coin too. Bitcoin being the leading cryptocurrency has a high graph depicting the profitability and upward push in in keeping with unit percent output or price. ETH has a slow and step by step growing fee which commonly is chargeable for the wide variety of human beings making an investment within the technology. besides, each ETH and Bitcoin are normally desirable and can be used as substitute for coins. There have more strong coin. XRP, BCH, EOS and lots of greater in pinnacle indexed.
I think you should not invest in any coin at this time, with a no market and bitcoin is hard to kick, your long-term investment risk is very high. Today's bitcoin prices have started going back down and I believe bitcoin prices will fall sharply until the end of 2018. Bitcoin prices are likely to fall, as you can see that prices are falling. The current altcoin is falling very deep.