I will only recommend 3 altcoins that i think you can hold it safely for a long term,
1. ETH
2. ARPA
3. ADA
those three altcoins are going to be huge in the near future i think not everyone know a lot about those altcoins.
but still, i'm very confident that those coins are gonna skyrocket at least in the next 6 months.
that's what i'm hoping for.
Good recommendation but indeed we need to do our own research to determine which coin is good for the long term,
what is clear is that I prefer coins in the top 20 or 10 for me it is safer and the risk is not too big,
for the coin meme itself I don't see it as the right choice for investment