Typically Lexus has followed the German mold of solid acceleration for the ENTIRE speed band. Rather than loading up on 0-60 or top end it seems that the Germans concentrate on where most of the acceleration is needed, in the middle. I like how Lexus has followed that mold to a degree. I have heard, (no eye rolling, Kim) that the CL-S has a horrible flat spot from ~90 forward. The few times that I will nail it at ninety (you know, open interstate fun when it's clear and you got somebody in a Bimmer or Mustang who wants to play) I would like for this car to perform. As silly as it sounds, the four times a year that I will probably do this reduces my love for that CL-S. I wonder if anyone knows how this IS will do midrange. I suppose we could extrapolate the performance from the GS 300 and come close. I know this is technical, but it is exactly this type of attention to detail that separates (Mercedes, BMW, Lexus) the leaders from the second tier players (Acura and Infinity, i.e.)