Its a little of a bad ride but not that harsh. i was hard on cash last year so i did them 2 at a time starting with the rears. I don't know why their too harsh for you, now that i have all 4 i love the ride!
Have you considered coil-overs for the front? I'm assuming you're like me and you want better than stock handling but you still want to be to enjoy driving your car without getting beat up on bad roads. I went with MM coil-over kit for my bilsteins with a 300lb 10" coil. Jason (MM tech) said they would handle better than the pro-kit spring I had and be as forgiving if not more forgiving than stock.
Actually when I finished my suspension on my car the tokico blues worked great all the way around! It was harsh with the stock setup but when I changed the springs it rides great!
I found this combo worked great for me! I'd love a set of mm coil overs but im on a budget. So to anyone else that has had our problems this is the setup:
tokico blues
frpp "c" springs
New oem ball joints and outer tie rods
oem sway bar with poly bushings
mm caster/camber plates
mm full lenght subframes
rear
tokico blues
steeda uppers
mm lowers
and the trick!......... .3 degree of negative caster at both dront wheels!