Advice needed on Lenders or Private Money for Buy and Hold

[Emmett Hawkins]

I have a few SF rentals in Georgia and Tennessee with more than 25% equity in each.  Now that I have decent equity, I would like to lower the interest payments to improve cash flow.  I am interested to know what type of interest rates are available with both conventional and portfolio lending.  Further I would love some recommendations of lenders (conventional and portfolio) or private money lenders that work with buy and hold investors.