Before comparing offers, make sure the borrowed amount, loan type, and timing are comparable. Look beyond the advertised monthly payment: interest rate, APR where applicable, term, upfront fees, total payments, and whether the rate can change all affect cost.
A longer term can lower the monthly payment while increasing total interest. Use a loan calculator for an illustration, then check the lender's official disclosure and any assumptions the calculator omits. For U.S. mortgages, the Consumer Financial Protection Bureau's comparison guide explains how to compare Loan Estimates.
Do not choose on one number alone.