They all three have massive potential. A number of factors to consider include:
1) condition of the subject property (How much $$ to fix up/ what repairs are needed?)
2) Layout of the house: is it good for renters??? (if you are renting)
3) condition and circumstances of the neighboring properties
4) vicinity to schools parks and grocery store, etc.
5) WHAT is your GUT feeling??
Better Homes and Gardens Real Estate Metro Brokers