These should be available to see at the toyota showrooms now. I got a call from Toyota last week asking if i want to book a test drive at my local dealer.
When you say its not accepting the DVD, do you mean its not reading the DVD that was provided to you by the seller with the maps or do you get an error message while installing the software? Have you tried contacting the seller?
My first choice would be Corolla hatch due to the fact that it has more power,better comfort and more space compared to the other two. Second choce would be the Yaris :)