I know that most in the whole import/sport compact scene just LOVE the over-heavy, highly weighted shift knobs.
But I feel that they cause much undo stress on the whole shift cable/shifter pivot points/mechanism, etc., especially bouncing around while driving on bombed-out roads, both paved and unpaved.
Maybe this is not a factor with our IB6es/cable shifters, and there is no problem at all.
But then I came from a directly into the inline/RWD gearbox shift rail type shifter in the T56 in my Z28, and that setup would definitely have been harmed (rail play, shifter fork damage, etc.) by these 3 lb. shifters that some use, and love so much on horrid road condition caused vibrations/movement.