I think that having determined the goal, only after that you can make a choice between old and new coins. What do I mean, if the task is to preserve capital and possibly increase it, but not much, then the choice is obvious for old coins. If the task is to earn money quickly, then the choice obvious behind the new coins. I think so.Well, of course, you need to be mentally prepared to lose what you are going to invest in new coins, at best a little, but in the worst case scenario anything is possible.