When we try to classify things as best and worst in this arena, inevitably prople think higher proforma cash flows are good, when they are in fact neither good or bad.

Sell your worst performing rentals and redistribute that equity to other asset groups with dividends.

The "worst case" scenario if your payment goes through tomorrow (or if you sent it in on the first) and a bunch of rosy perfect stuff happens, is that your refund check will be slightly larger & you might be out those funds temporarily while the payment is being processed. 

NYC evictions are the worst!

My county was 2nd worst hit in the US, and it has admittedly influenced my thinking. 

Our contractor had to do some "magic" to replace just the worst of the studs.The wiring was all old and in three stages of distress...various remodels and upgrades over the many years. 

What is the worst deal they have had?

If the deal still works at the worst rate possible, it's a green light. 

At worst you need to use NEIGHBORHOODS and even better understand Detroit is often block-by-block (although that is getting better in many neighborhoods).Suggest you follow our blog here on BP where we write about Metro Detroit:https://www.biggerpockets.com/member-blogs/3094-royal-rose-properties

If you want good landlord laws, the Northeast is not that friendly, NJ being one of the worst for landlords.