How Much Should You Borrow?

The cheapest loan available on the market right now from 3,000 to 4,999 pounds is 8.3% APR. The cheapest loan from 5,000 to 7.5 grand is 5.1%. So what I would like to know is which loan would cost you less per month and therefore lower repayments in total? Should you borrow for 5 years 4,650 quid at 8.3%, 5,000 pounds at 5.1% or is it roughly the same either way? Thank you. You borrow less.