I have all 3 and have had them on the SVT for over years now. All still pretty good through 2 years of AutoX too.
I do feel the lower mount could be replaced though, I noticed it was beginning to get soft a couple of days ago. But great mounts anyways.
I will be ordering a Race application Lower mount from CFM soon.
Oh and the vibration isn't that bad at all. Feels great when you are driving.