Both are good, the only thing which is matter, is to take right decision at right time. you can make a good amount of profit with cryptocurrency switching, if BTC price is increasing you can switch from Steem to BTC and then sell you BTC at high price and Buy Steem at Lower price and Vice Versa.Currency switching requires lots of market understanding and daily study of crypto market behavior.
BTC has experienced rapid growth recently; Other cryptos, STEEM for instance, hasn't really grown that marginally compared to BTC. So I think exchanging BTC for STEEM will suffice since you will get to have far more amount of STEEM in your wallet. This can become a good investment should the price of STEEM begin to surge.