Anyone have any personal experience with something like this?

https://www.moddedeuros.com/products...4-a6-s4-rs4-s6

I know the adjust ability is limited compared to adjustable upper arms, but the cost difference is significant here too. I run at the higher range of my coils, so only about an inch lower than stock, and camber is hardly off up front. I'm more thinking as the bushings become shot, is it worth replacing them with something like this? I've always wondered why a poly insert wasn't sold for the A4/S4 markets

Yes, the upper arm inner bushings are replaceable