loans for multi unit properties

[Ki Lee]

From my understanding, for traditional loans for single family residence, they primarily look at credit score and debt-to-income ratio.

Specifically, I was wondering if different lending standards are used for multi-unit investment properties where the potential profitability of the property trumps some of the other factors.  I have excellent credit, but unfavorable debt-to-income ratio.  If I find a property with excellent cash flow potential, will I have a good chance of securing a loan(albeit a higher interest rate) even though I have undesirable debt-to-income ratio?  I am willing to put down about 30% as down payment.  Does it just vary from lender to lender?  If so, any recommendations on which lenders?