I have KYB shocks front & rear on my '97 T-Bird, and I'm not real crazy about them. I believe they're too soft in rebound damping, at least with the front ones. I had my front sport springs replaced in April, 2009 (right after I bought the car) because they were broken. They were replaced with Moog coil springs. The KYB shocks were installed at the same time. I was immediately unhappy with the way the front-end "floated" up and down when passing over dips in the pavement at highway speeds. A short time later, I bought Vogtland 1" drop coil springs and installed them front & rear. Now, while the front-end "float" problem is MUCH improved, it is still there slightly, and I've come to the conclusion it must be the shocks. I don't think I would've had this problem with the O.E. sport shocks and, if my car was in better shape and worth the money, I'd invest in some better shocks. But, the problem isn't bad enough to really need to do something about, right now. Besides, I have some other major issues on the car to fix (power steering rack & hoses leaking, oil filter adapter gasket leaking, I'm getting REAL tired of having to put my passenger-side window down so I can lift the door up to close it because my lower hinge is shot, etc)!!!
I've often wondered how I'd like those Monroe Quick-Struts!