Here you don't want to mess with b-, c or d class.

I think your best bet on something like this might be to house-hack it and live in one of the units while you rent out the other two.

So basically, if you all were standing at a fork in the road  and one said C+  or B properties, which way would you head considering these PROS/CONS for each?

Opening a C or S corp at this time triggers more business filings, accountability, etc. when you as a single-member LLC are just figuring it out as you get going and can just use a separate bank account for the LLC.

If you are in the right area, and already own a bunch of rental property f&c or locked in to fixed rates, you could make out like a bandit.

Class B or C or something else? 

If you don't buy into a super-hot market and bet on appreciation...REI is relatively safe.  

A, B, C, or D area?

Go to Vegas and bet on black... you can double your money with the spin of a wheel (course you could lose it too, so do your own risk analysis!)

Depends on class of rental of course, but if you are renting C or D class, I am not sure you would want the tenant in the property by themselves.I think part of the reason there are limited options is that Rently and a couple other lock companies have patents on what they are doing.