I think bitcoin is the best crypto in this generation, that's because all altcoin is compared and or converted to BTCitcoin and it is the first cryptocurrency and one of the most largest and most valuable among all coins out in the market. The exchange rate of BTCitcoin to USD right now is somewhere $1,200 and still increasing so I think it's really hard for other cryptocurrency to beat BTCitcoin. Someone actually did a prediction, if  BTCitcoin is still the best crypto by 2030 and in still increasing that day the value of BTCitcoin will be 415 times more than the value today.  If you check in here => http://www.newsbtc.com/2017/04/09/bitcoin-price-prediction-500000/ you can read more about their predictions and how they do it. So for me BTCitcoin will be and always be the best cryptocurrency out in the market. 

- CONCOIN - The most dangerous cryptocurrency in the world