If you had to choose only one, saving or debt repayment, which would you choose?

My answer to this question is YES. You may say that is silly but so is the question. You may choose paying off debt preceeds saving as it frees up money to save and usually the interest on the debt is higher. The one problem with that is the transition period when the debt is paid off. You have this huge surplus in your budget when the debt is paid off and no skill set for savings developed. That is why YES...both is the only answer. It takes time to build savings and investment skills so practice saving while you focus on paying off debt for the reasons Frank identified. Then when you completely pay off the debt you already have some savings and will be itching to try news ways to invest your money to get better returns.