Rent-to-own does not really exist and if it does exist, there are no bargains.
The houses/apartments are usually overpriced and sold to people that can otherwise "not" purchase a home and are somewhat taken advantage of. The chances of the rent to own scenario is probably not going to happen.
What will happen is you will get a whole bunch of Realtors telling you they can do it or have done it and really will be lookig to sell you something else. I am sure that there will be a bunch of people saying that I do not know what I am talking about and blah, blah, blah.. but, lets speak the truth. I have not seen one good rent-to-own situation that has worked.
Think about it.. you want to buy a place in a down market, telling the landlord that you will pay this amount -*next year*- and the market goes through the roof.. guess what happens to you and your rent-to-own.... over.
If it works out for you and you find one.. let us know!