When deciding in which coin to invest you can either blindly follow suggestions by others or make your own informed descision based on some criteria:
- What problem does the project attempt to solve?
- Is it a solution looking for a problem?
- Is there active development behind the project? (check Github activity)
- Has the team produced anything but a whitepaper?
- Are there established competitors which are much further into delivering a working product?
- Cross reference developers against previous scam projects
- Current market capitalization of the coin
I definitely agree with these factors to consider when choosing which coin will be a good investment that will give an investor huge returns and profit. And I think it will be etherium, because it already has a large community that highly affects the demand as well as its value. It is a good competition for Bitcoin, because ETH is continuously growing in all aspects that it already reached more than half of Bitcoin's market cap, if I'm not mistaken, which is good for long time investment.