What would be your pick? And why did you choose that coin in the first place? Your input would be greatly appreciated. Thank you. 
Considering altcoins alone i will have to go for both, but when considering cryptocurrencies in general, I will first go for bitcoin, I've chosen to go for both litecoin and dogecoin because the two has a better market potential, they are one of the altcoins one can conveniently Invested over and have no reason to fear for missing out, I've been tracking the two over time now and they never show any insignificant performance.