Benchmark lending, secured loans and unsecured loans are all jargon that financial people use to address normal people about these matters. However, it is a simple matter of considering how much debt finance you have and whether you actually want to debt refinance current debt.
It may be wise to consider such measures if you are starting out and for matters like loans etc, or double bonds/ loans with different institutions. Keeping in mind that student loan consolidation rates may end up costing you more that your were paying in the first place.
There is simple two types of debt, good debt. or leveraging, and bad debt, debt that costs you more than you make out of it. The types of security put up for the debt can either be secured debt or unsecured, and it is about that simple.