I too work as a consultant (Business Pro, with Apple) and I am beginning my REI ventures this year. 

Maybe Im just lazy, but I’d rather the apple fall out of the tree than risk climbing it and falling out myself.

It’s always wise to collect data from multiple sources - just make sure your making apples to apples comparisons (bedrooms, lot size , school districts etc.)

If you get a bad apple the housing authority will make it hard for you to get them out.

You mentioned Charlotte, Orlando, and Vegas as being popular, but with these being so different FROM each other, I don't feel these are apple to apple comparisons.

My tenant profile is mainly 20 somethings and I point out that the new iPhone will have to be purchase with cash if they have negative strikes on their credit. ... find the pain point and press... and for students, find parents pain point also (co-signer)... usually car loan and/ or mortgage.

Hilary Catton need a way to send colleague requests via the iPhone app

Not sure if they are apples to apples or not.

PSF does not do a great job of going apples to apples on houses that need completely different repair scopes.Pick up J Scott's book, or "National Repair and Remodel Estimator 2015" big book to learn what materials should be costing you.

Does anyone know if it is possible to modify your profile and picture from the iPhone app?