BTC has already shown its potential this year, but if you compare the raise of BTC with other major altcoins, they are still very silent. I have not mentioned any great price increase, so I hope it will happen in the nearest future.
Bitcoin is up and this is a good thing, Altcoin is following an increase because Ethereum is improving better.
Bitcoin is indeed a good choice because the movement is good and may be very profitable but to get Bitcoin you need big capital, compared to other Altcoin.