Bitcoin is very much different from bitcoin cash and in many areas, they will not be the same thus it is not likely to replace bitcoin. The price of bitcoin cash may have been doing well but this does not mean that it is going to replace bitcoin. Even when prices are good, bitcoin is far off from being like other altcoins.
all because bitcoin has been able to prove its existence, whereas bch I don't think I can afford it at the moment so the best is bitcoin , I think.
What's best should not be based on your fortune or your ability to invest.
I don't think I can ever support bcash, especially after having seen how it was born.