I'm far from an expert so I'm not sure if I can give any technical feedback on it, but I've enjoyed it as long as I've had it. Put it on about 15k miles ago and definitely wouldn't want to go back to stock FX4 suspension. I think the most noticeable thing for me is going over lightly rutted/bumpy gravel roads. The Eibach suspension is extremely smooth when going over those roads at speed. At lower speeds I don't think it makes as much of a difference. And it seems to have survived my off-road trip without any issues.Very cool. How are you liking the Eibach suspension? I have the exact same truck and am thinking about upgrading to Eibach.