Which should I invest into bitcoin or altcoin
Big amount of capital I suggest for bitcoin. But low amount of capital then better invest on altcoin. Altcoin is good investment but not all altcoin. Its something special or good altcoin. Such as Ethereum, Ripple, TRX, ADA, EOS and NEO also. Be careful of choosing an altcoin.
I agree with you sometimes that altcoins shoot more than bitcoins . But it is always necessary to study the market before investing