Any drawbacks to this type of financing?

[Adam Craig]

I see lenders who offer lines of credit saying things like...

Midwest Corporate Credit works with over a hundred national, regional, and local lenders and credit unions. Our experts are consistently tracking each and every lender's trends and requirements, and use this data to optimize your financing mix so that you receive the most capital, with the lowest interest rate, as quickly as possible.

http://midwestcorporatecredit.com/index.html

This company has some great reviews and is good with the BBB. Is there any drawbacks to using a company like this to get some working capital?