whiteline rear beam lateral locks

[sambb]

Whiteline W63198

I'm researching all the different rear beam bushes that are out there. Just wondering who has used these and if so could they give a bit of feedback on them - noticeable difference or undetectable?
I'm not adverse to keeping the standard bushes in place as they are in very good nick and from what I've been told, full poly's can bind on beams that have offset angled mounts as they move throughout their range. This is what I want to prevent though and is exactly what I've been feeling - pretty shocking really: https://www.youtube.com/watch?v=ypJf22xXJeU