A defined expense
A loan is generally a lump sum. For a fit-out, equipment purchase or bulk order, get quotes first so you can estimate the amount and work out how long the purchase is likely to benefit the business.
A recurring gap
A line of credit gives the business a limit and lets it draw as costs arise. Look at how fees are applied to used and unused balances and what happens when the facility comes up for review.
Variable card sales
A merchant cash advance can collect a share of card turnover. Compare the full amount due and what collections might look like in a quiet month. Check any minimum collection or repayment requirements.