I was reading online and found a few blogs that talk about the factors to consider while evaluating a new cryptocurrency or project. Factors that include research on Crypto coin based on a number of things such as the purpose, use of blockchain, coin economics, usage, team, etc.
The biggest factor that contributes to a coin's success is this: how many exchanges are they listed on? The more exchanges it is listed on, the safer the coin, and the more liquid, plus the more access to investors.
I've seen coins just die when Mintpal and Cryptsy went bust, because those were the only exchanges they were listed on.
So for your list of coins you are thinking of buying, so through coinmarketcap and work out how many exchanges they are listed on. The coin with the most listings is then your top buy.