To find out what the good coins are, you need to do your own research analyzing each detail presented by team members in the project. The project team must be a professional one with experience in the proposed field. Do not follow the recommendations of others. Do not invest your money in the recommendations of others. If you do not want to risk too much, however, you can choose any currency from the TOP20 coinmarketcap, less the XRP, which is a centralized currency.