To get the Imola red requires the performance package. The ZHP, as I have just learned is the performance package, has 235 HP and a tested top speed of 150-159. Also, upgraded suspension said by some to be an M division product. This will make a big difference when compared to the 325. But then again, who cares? How many times are you going to drive 130, 140, or 150 MPH? Also, I am not sure the acceleration makes that much of a difference for those of us that drive daily in bigger cities. I like my ZHP, it is a lot of fun but I think the 325 are fun also. The 325 is not as rough of a ride as the ZHP. Cant go wrong with either of them.
IMO, I love the 6 speed in my car.
Would never get anything else in it, I think it fits the car.