I think that it's impossible to find the perfect coin that will constantly bring you profit. We need to find the right coins to invest and choose the right time to invest in them.
I will always tell that two best of the best currencies are bitcoin and ethereum. So it up to you which one you will choose
I guess, most of us have already understood that Ethereum and Bitcoin are the best cryptocurrencies. meanwhile, there are other tough tokens besides them, Cardano, for instance.