I had my rear shocks replaced because they started leaking. They were white KYB Gas-A-Just shocks.
I couldn't believe the difference in ride quality, stability, handling, noise, etc. especially from the rear end of the car.
Now it's time for the front KYB's to go. Maybe tomorrow actually.
BTW, the replacement for the rears were Bilsteins (Comforts).
Honestly I think that's probably because the KYB's were old. However they really didn't look that old..... (obviously they were put on the car at one point in its life by the previous owner)
BTW...
I have a dumb question... sorry..
What is/are the difference(s) between a strut assembly and a shock absorber? 
Thanks