 While there isn't much visual differences between the CL500,600,55 the 65 stands alone when it comes to power. The 604hp is almost too much for the rear wheels. I wish it had all wheel drive and was about 1500lbs lighter and was truly stand out that this vehicle cost close to $200K I was tempted to leave the window sticker permanently in the window. I also wish MB would not have put a governor on the vehicle it tops out at 155 where it still has plenty of room to stretch out to the 200 mark. I admit I don't feel 100% safe driving at the mid triple mark speeds b/c it is close to 6K lbs and would hate to have to try to stop or make a swerve If cash is tight go buy a BMW