The thing I don't like about "Asperger's Syndrome" is that there is no formal nominal (noun) or descriptive (adjective) term to facilitate its use in conversation. I cannot say "I am aspergic," because no one would know what I'm talking about and it sounds ridiculous anyway. "Aspie" fills one of these roles, and I honestly think it's adorable. That said, it is still informal.
For these reasons, I prefer to say that I am autistic these days. Autism is a more elegant and professional sounding word; I like the way it vocalizes. It also nullifies the ridiculous "ass burgers" joke. If only Hans had had a different surname.
AS is going away as a separate and distinct diagnosis in the DSM-V anyway, so it makes sense.