Agreed, I consider myself a preppy. I believe that people like me have suffered "dim mak" at this point in the thread Although I do not own any J Crew clothes, I think that their catalog is great.
I have to agree with a couple of points mentioned above. As a self proclaimed preppy, let me say that polo shirts are not meant to be tucked in, and maybe a grosgrain belt would be in order? Try it, you may like it.