For now, I prefer Ethereum because bitcoin cannot be predicted when it will rise again and Ethereum has the potential and fluctuations in the value of the price slightly compared with bitcoin but Ethereum is more stable and has a fast currency exchange rate easily
Price of bitcoin has characteristic. if rises can 100% or 200% same vice versa if down. when rises you would become king but if down you would become a slave. different with ETH, when rises or down is slowly but surely.