I would say that both are important, if you ask me. Investing you will have chances to increase your capital, and could gain experience in the market. Having savings you will have a better life and be able to deal with situations where you need that.
Saving money is always needed and do not spend on something that may not even need you. You should always from time to time, review its financial payments and rasstraty. Saving is the key to a healthy financial condition of the family ..