You can get a nice house with low vacancy for around $60,000 sometimes even lower. and those can rent out for $600 to $700 dollars.

Most of your residential units are lower income but there are some pockets of better income.

I have properties that range from about 40-62.5%, it's all property dependent with rental price being the biggest factor... higher rents, lower expense %... that $4k HVAC costs the same wether the place rents fro $1k a month or $500 a month, but you're looking at 4 months vs 8 to pay for it. 

None-the-less, I think it would depend on what level of involvement you want to have.

@Mike Robinson - Some thoughts on those lower priced MFH's we were discussing.

The deductions simply lower your taxable income. 

What would be your advice on the levels of risk-reward grading of the following Real Estate categories?

My question is if buying points for a lower interest rate on a traditional-financing loan has any $ advantages for an investment property.

In many real estate markets multi family price per square foot is lower than attatched single family price per square foot.

If you have lower return targets than I do, then perhaps there are lots of properties that generates ok returns.