Nice pictorial,
One thing was not mentioned here is that with the M-Sport suspension there is an additional sensor on the strut housing that is an accelerometer, it detects the rate of changes with which the suspension travels up and down (not to be confused with the height sensor).
All and all, I think a regular sport suspension equipped car with a nice set of lightweight wheels and tires (totaling ~40lb) will be a far better improvement to the car than an m-sport suspension setup.
13 x 4 x ~5 = 260lbs dead weight equivalent.
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