30yr fixed 4.75% or 15yr fixed 3.5%

[Diana Tian]

The montly payments difference of these two rates is around $400. At one side, 15 yr will help cummulate more equity. But 30yr will provide more cash flow. This will be my first investment property. I plan to get more. I don't have a specific strategy yet. For now, i am just betting on house value appreciation.  Which one should i choose? 

thanks!!!