Nobody has an answer to this because no one knew from the scratch how successful bitcoin or Ethereum would become so as a new member, you should start first by learning about the basics before you plan on investing...
Cryptocurrency can be a very treacherous market most especially for the newbies who are only armed with enthusiasm and excitement more than knowledge and experience. I agree that there is no point in asking here which project can be the next Bitcoin or Ethereum because as of now nobody has the power or means to predict which of the current crop of project will be able to reach the critical mass of users or adoption. There can be some candidates but recommending can be self-promotion and definitely biased so am suggesting for OP to study more and expose himself to learn more starting here in this forum.
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