I live in a fancy neighborhood & receive tons of junk mail from realtors.  99% go into the recycle bin, since I'm not interested, but I do open and examine the handwritten ones that appear to be cards ( like a B-day or X-mas type card). 

(townhouses, apartment building, first floor living complex)The area is a B+ blue collar town.

To play it as safe as possible I bought a property in a B area, it was already occupied.

To me it seems like his arguments were all scare tactics and heuristics ("I'm almost 60 years old--I've been around to long enough to know these things don't work" or "talk to A, B, and C about this and see how it worked out for them").

This is a B- asset in a B+/A- suburb of Indianapolis. 

For instance, many rich folks own homes in Canmore, AB (Canadian Rockies).

Most capable folks focused on wholesaling moved from an A to a B market and found good results.

My advice, if you don't have a lot of experience stay away from D class, and really avoid C class unless you think it is on the fringe of a B area and progress is headed that way.

But our properties are in A/B areas and our tenants rent from us while they are saving up to buy a house- the most common reason our tenants leave us.A note on scores themselves though.

I just went to a B/P meet up last night for Air BnB, I am looking into that route too, but for now I am going to lay low and continue my R/E licensing exam and wait for summer to pass...apparently it can get real expensive this time of year.