Rosie,
I am sorry to hear about your NAS returns. I went through the same thing last year; but for different reasons (fallout from the economy). I sucked it up; and was later treated to a pre-20th reunion shopping trip by DH. I ended up with some great pieces that look fab, and everything worked out fine. Personally, I am not buying anything at NAS this year. In fact, my only experience with NAS has been trying on a few pairs of shoes that everyone raved about (free for me), and letting my mom buy each of the kids a pair of Puma sneakers (her nickel). Right now, every dollar counts, and I'm realizing that not being able to shop freely is not that serious, in the scheme of things.
I am also a 10-year-old car owner, with 200K+ miles, who has spent more on repairs recently. I love not having a car payment, and am dreading the day when I have to cough up the cash for a newer one. As you focus on the makes and models that you like, I think that you should start a thread called, "Looking Fab Behind the Wheel," and post pics of yourself in different cars. I think that it would be fun to help you with this very important purchase, and/or support you during the process.
Keep your head up! This too shall pass...