I have them installed with KYB GR-2 struts all around with new OEM mounts and isolators. Rides smoothly. Hard to say if it made a huge difference in ride quality. Car was parked for 5 months and I drove a 3/4 ton truck for the winter.
I'd reccomend KYB Excel G front and rear struts for anybody looking for more of a
performance type ride.
I wouldn't call them harsh but with KYB building the valving 10% stiffer than oe ,
it's a much firmer , controlled ride.
I just installed four on my son's car and I had honestly debated about doing the
fronts as I didn't think they were that bad,,,, But I'm very glad I did and it was worth
all the work as the car handles great,
Note : Economy quick struts are exactly that ,,,, something a used care dealer
would buy just to sell the car. Short lived and just plain cheaply made.
Even Rock Auto has divided their listings into economy / performance.