Best way to expand with $30k-$50k

[Tyler Dunlap]

I am looking to add another property (or two) to my portfolio.  I have one rental condo that I am very proud of.  I have about 60k worth of equity that could potentially be tapped into.  I want to use my cash on hand to start playing the cash flow game.  What should I be looking to do with 30-50k in order to maximize my returns?  I've seen a couple of seller finance deals for 15-25k down that would bring in 300 or so a month.  Is this a good way to go? Should I be looking to scoop up some seller finance deals?  

Thoughts and advice greatly appreciated!