I have them. They are what they are, better than stock but probably not as good as a full replacement mount. Didn't add any noticeable vibration or noise, which was my goal. Keep your eyes peeled, used ones come up frequently for ~$20-30.
However I am about to swap to a JBR billet mount, I don't think the stock mount with CS inserts will hold up long term considering my mods and future plans. On the down side, I'm about to get some vibes and noise that I don't really want....
