I am trying to decide which mortgage route I should go for an investment property.For capital and interest route on my investment property the best rate I can get is 4.94%.If I re mortgage I can get 4.25%.If I go down the interest only route at the 4.25%I will have to take out life cover.The amount I am borrowing is 100,000 over 15 years.Given the 6%+ savings rates offered by some financial institutions for regular savings accounts.Is the following a viable option.Take out the interest only re mortgage+life cover minimal,deposit rental income [amount not sure] in a regular savings account in the hope of having 100,000 in account after 15 years to re pay capital.I would be getting interest on sums in regular savings account+lifecover.Does this have advantages over the capital/interest repayment option