Cash flow reinvest or save for down payment

[Cole Black]

Ok let’s say I have a mortgage on a house amortized for 30 years. The property earns about $300 a month in positive cash flow. I would like to reinvest this money but would like to know where it’s better off. Should I put that $300 dollars into the mortgage lowering my monthly mortgage payment and increasing my cash flow. Or should I save that $300 extra bucks until I have enough money for another property. What’s the better option and why?