Chuck as a general rule of thumb I personally try to avoid going past anything with double digits streets.

Pretty much any granular model with be a GIGO machine if one doesn't price risk correctly and thus selecting significant digits down to the penny for precision is dubious at best.

@Jeremiah Mon I can totally dig it!!!

The are other features available to you such as listing, applications, digital leases, and maintenance tracking which is all free as well. 

You may recall during the down turn not EVERY market in the US fell by double digits.  

Are double digit returns obtainable still? 

In my day job I'm a digital marketing manager which I love,  but I see so many opportunities with rei.  

Digital photos have a META stamp that contains forensic details such as date/time and, so long as they are not edited, can likely hold up pretty well as evidence.

If you have a HUGE response, setup a laptop for them to submit their info on-site at an open house if you insist upon digital applications.

It could be worth considering a shot at a rental property management software built for DIY landlords (1 - 15 units), and helps you to automate your own rental process (ie. helps you to get it listed on 10+ major listing sites, allows you to schedule showings, provides you with thorough tenant screening options, online digital leases, automated maintenance tracking, and fast rent collection which also offers your tenants the ability to report their positive on-time payments to the major credit bureaus; just another positive reinforcement/added incentive to get them to make those payments on time).