No one can and no one should make that call for you. If you need investment tips, you shouldn't ask them from random people from the internet. Study the markets yourself and act accordingly. You are in danger of losing your money if you need someone else to make that decision for you.
Possibly Ethereum can be suggested to OP for long-term investment as this altcoin has been in the market making waves around. I have invested in Ethereum for a long term, this investment fetched me more profits than any other altcoins back in 2918, I can recommend this altcoin anytime any day. Though, this is not an investment advise, use with discretion. What worked for me may not work for you, wishes you an investment success in cryptocurrency.