Would you pay off PR or Rental first?

[Joe M.]

OK for those of you that only have a handful (or 1) rental and a personal residence, which would you pay off first and why?

A couple assumptions-

-You have a lower pay off amount and a higher interest rate on your a rental.  You would have a lower rate on your PR, but would save a lot more with a paid off PR.

-You are going to be at your PR for a while.

-You have your comfort level of liquidity after paid off, as well as being comfortable with your amount of rentals and money in the market. 

So which would you pay off first and why?  What is your thinking?

(Also, this is a hypothetical.  I know I can leverage up to buy more assets. I get it)