Hard to say, because both btc and some altcoins are good. But you need to know, that bitcoin is the best and in my opinion invest on this is always a good idea.
Indeed. We all know for sure that both of these coins are pretty good. But to choose on both of them, I'd rather select Bitcoin. Bitcoin is widely known as the best of the best coin and the King of all cryptocurrency world. On the other hand, there are alt coins that fails to do its job and many alt coins are relying on Bitcoin. BTC is the number one good suggestion or recommendation when it comes to investment and high value of profit.