All I can say is going with good struts is an important thing. My car handles good,etc. but sometimes feels a little looser, like I feel safer pushing a mustang to its limits than pushing my car to its limits (though my limits are higher) because I'm using used svt struts. It could be something else causing this wavy, mushy feeling (bad description) but I'm pretty sure it's the struts. Go with bilsteins or konis and then whatever springs depending on what ride height you want.
