This is how I see it:Single-Family Homes:Pros:Larger pool of potential tenants (families).Simpler management (one tenant, one lease).Often easier to finance.May appreciate faster in some markets.Cons:Only one income stream.Vacancy hits harder financially.Duplexes:Pros:Two potential income streams.Live in one unit and rent the other (house hacking!)

If you need current income, I'd recommend another fix/flip.

For all methods you would want to find a market that has strong employment rates, strong income rates for the market, and is a growing or an established market. 

I love talking with investors, sharing values, discussing their wants and needs, helping them fully understand what they’re investing in and helping them achieve their passive income goals is very rewarding.

Locally my observation is that the need is more for low income young and working vs college student.

My concern with declining values, increased inventory and a weaker economy would lower rental income and could potentially put me into a negative cash flow situation.

Held in my property entity that I purposely keep a low balance and doesn’t show a lot of income.

This is all depending on your credit and income meeting the guidelines of course.

This requires an income that allows you to maintain your standard of living throughout your life.

The secondary goal is to increase rental income down the road.