I'm just disappointed with the pricing - not far enough from its 'bigger' sibling. Same issue with the CLA. Seems like for the money "saved", you're really sacrificing a lot. Less so for the Audi and more so for the MB, but the S3's steering and lack of vectoring control makes me wonder why the S4 isn't the better buy. If you prefer smaller, faster, then yeah, but I think simply too expensive.
I, too, am excited for the redesigned S4 - that thing is gonna be a huge update (else, fail).