Has anyone installed any? I just installing a 4 sensor set on my vehicle and was just wondering. They seem pretty good thus far, but they haven't been real-world tested yet. I'll post some pic when done. Got them off E-bay and with a 2 yr warranty they looked like a good deal. (Too bad I already got dinged on the bumper, but that's what parking lots are for. Dang Soccer Mom most likely. )