I think the last few posts may be based on just what we consider "ride." Probably all of it legitimately can be. There is no doubt in my mind the Koni improved the rocking motions, and the larger unpleasant motions which made the E series feel like it was flopping along on it's suspension. But like pauldub, I think the huge multi leaf packs have a lot of internal friction, and transmit jolts just fine all on their own, and the tires don't help either. While I haven't tried it, I suspect removing the shocks entirely would still allow some of these so called high frequency impacts to come through. The shocks can theoretically help with the high frequency jolts (the part that actually comes through the shock)..and they very well may. It's just that my butt detector isn't sensitive enough to cleanly pick out the improvement. Instruments under controlled conditions could tell a story. From what I read here, with my "little improvement", pauldub "any improvement", and quite a few others mentioning improvement-I think there is some improvement. But the springs themselves are huge culprits. There's a reason multi leaf packs are not typically used in cars...starting in the 1950s and possibly before. Coils simply transmit less harshness. So do torsion bars and single leaf springs. Multi leaf packs are great for beasts of burden like our E series.