both coins belong to the long-term type of invetation. if I myself was told to choose between bitcoin and eth for long term.
then I chose both.
because bitcoin and eth already have good reputation value.
but for now, I use eth as the main investment of my assets. because eth has been widely used for platfrom alt that appear.
all depending on the choice of each person itself.
experience also determines that the selection is based on what we have experienced.