I think that saving is the better cause investments is always risky, you will never know what you can got at the end, so better to use safe ways.
investments are surely risky though if you dont do a dumb investment then you can make some decent money to be honest, i hope that it will make me big money as i invest right now into bitcoins
well saving is the safer way but if you do this your money would be sleeping unlike when you invest, although you take risks, if you research about study about what investment you're going into you're almost sure to earn. both are good ways to manage your money though instead of using it in non productive ways