I wonder how that could be.In all seriousness, appreciate your input.

Any input would be greatly appreciated.

After inputting all the data, they provide a review that includes cash flow, Cash-on-Cash (CoC) ROI, and even a graph to estimate the property's growth through appreciation, yearly cash flow growth, and loan paydown.

And what is your input to the OP’s question?  

Any inputs on pros / cons of either aside from the supposed cost implications?

Any info/input would be greatly appreciated.

Any input, advice, critique, and recommendations for GC's in this field and area is welcome!

I've start my own "new to Phoenix post" giving more details on my background and goals, if you have input let's chat there! 

I will start with the Avery's book and the suggested podcasts on this thread.Appreciate any inputs/responses.

Therefore, it is common for LL to be responsible for heat and water, which can get very pricy in cold months, but the cost to change out boiler is nearly impossible to justify.