If you're open to out-of-state investing and looking for an inexpensive market that produces strong cash flow, I recommend checking out Cleveland, OH. 

SCENARIO: You quit your W-2, but you have $100,000 in cash and five single-family homes that produce $75,000 in cash flow and have $400,000 in equity. 

Innovations in construction technologies are also enabling faster, more cost-effective building processes, opening up new investment avenues in developing areas.The Enduring Value of Real Estate InvestmentReal estate remains a preferred choice for investors seeking long-term value.

I live in the bay area and bought in Nov 2011.

On the flip side, the large models did not cost that much more to produce, but the market would pay much more for a 10,000lbs top model. 

Exchange your non income producing property into an income producing property.

Also, come resale time, the duplex would have a proven track record of producing income and has definable value, whereas a single family home is largely dependent on current market conditions and home buyer emotions and buyer pool at that given time

Choose any two of them and see if they produce similar numbers. 

Nevada has relatively high sales and use tax but the gaming industry produce a lot of the revenue as well helping to keep property taxes low.  

However for a solo agent I suspect she is right up there in our market as a top producing agent..