In my opinion, you the market cap is a good indicator, and only this.
Be careful with coins like Tron, Cardano, Doge, etc... If you are looking for long-term investment they are not good coins. They don't have nothing different or unique, than others already have.
Look for innovative coins, like Waves, Onion, etc... These kind of coins have a huge potencial for the future.
However if you want only sort profit/daily trading, every coin may be good.
Be careful with coins like Tron, Cardano, Doge, etc... If you are looking for long-term investment they are not good coins. They don't have nothing different or unique, than others already have.
Look for innovative coins, like Waves, Onion, etc... These kind of coins have a huge potencial for the future.
However if you want only sort profit/daily trading, every coin may be good.
It's funny how you called Cardano a coin that isn't good, but called DeepOnion innovative? lol. Cardano's whitepaper is actually good, the issue is only that it doesn't have a working product yet it's already top 5 on coinmarketcap. Whereas DeepOnion? I don't think "innovative" and "onion" should be used in the same sentence.