This question is like the alternative way if you do not have any budget to invest in bitcoins then you should spend your money to eth coins because it is the 2nd highest value coin and it really has the potential to grow for the next few more years.
I think what the original poster meant, what many of us want, is what altcoin can we buy dirt cheap (like at .00000000001), buy a ton of that then wait for 1-2 years while that value goes up to $100 so we can get rich.
My suggestion is #ETN. They're down right now but not out.
I got your point but figuring out what ICOs are really promising that would be the next Bitcoin in the future other than top Altcoins is very difficult. But what I really suspected are the ICOs that I had joined bounty campaigns because I knew them well like
BM Chain, Oyster, IDEX, and. Other coins that really good players that would possibly compete toe to toe against top Altcoins loke Ethereum, Ripple, Waves and LiteCoin.