I installed a set of Rancho 9000's on my 2004 Taco CC, set # 2 for comfort, but then you get tire bounce (like a shock gone bad) on normal roads and wheel hop on hard acceleration. #3 was an ok compromise, didn’t keep the truck long enough to experiment more…had a set of Bilsteen's on my 97 Silverado, the comfort shock was too soft (probably because of the heavy Michelin tires 265/70/16's) and the heavy duty too stiff. i ended up going back with the comfort shocks and helper spring ... On my 05 Coly z85 I had stock shocks with a shortened Suzuki leaf spring clamped to the front side of the leaf pack, same idea as the hellwig helper spring. Worked excellent imo for over 120k miles. On my 12 Canyon z85, I have stock shocks and the rears are soft, anything but perfect roads and the back end is all over the place after hitting a bump and the dreaded tire bounce effect. So I replaced them with a set of Monroe Reflex’s, it has a stiff short bouncy ride, i thought after a few thousand miles they would soften up, but no luck. For now I dropped in a 60lb bag of sand, which helped tremendously, but messy :-? As soon as I can find a set, I’m going back to my Suzuki leaf spring and oem shocks … if your suspension is kinda stiff, go with a "softer" shock? maybe try oem shocks from a z85?