If you really want an Acura RSX hurry to the Acura dealer and pick one up. From what I have been reading, you can pick one up relatively cheap too, since true car enthusiests like myself have decided the standard features in the new Si are worth not buying the RSX Type-S. Had they only added the limited slip differential to the Type-S then I would have easily picked the RSX over the Si.
With the RSX gone, will they put the 160HP engine into next years Civic Ex models to fill the gap that the base RSX filled? How will sales shape up with the Si Sedan coming out this fall? Time will tell.