Years ago it was finding quality tenants.

Now let's look at Quality based on grade of wood.There are primarily two different terminologies and methods to grade Quality. 

You’ll want to invest in areas that have tenant interest but also aren't on the extreme end of neighborhood quality—this means avoiding the very toughest spots, where turnover can be high and managing tenants can be difficult.

They must provide quality service, or their clients won't want to pay the price.

That being said, I'm not a fan of holding property in anything sub B quality. 

The two are almost entirely different markets in terms of price points, returns, tenant quality, and overall investing strategy.

Again, treating folks with housing support funds with the same dignity and respect as everyone else, usually nets quality clients that listen and do their best to follow the rules.

I'm particularly interested in what tactics people have implemented for sourcing quality deals (not the I need 100% financing bs)Would you:1.

Are their listings detailed with good-quality photos?

I don't know how difficult of a task this would be, but suspect it would make for better quality forum content.