of course, in Alt coin you must choose top Alt coin to invest and surely he will give more profit compare to bitcoin, i personally buying Small cap Alts.
BTC is most preferable for investing by investors and no doubt this coin is most profitable. But even though the price of BTC is so low, but it is still expensive for many people. Because of that l prefer investing in top altcoins, as you above mentioned top altcoins are more valuable compared to other altcoins.