Any of you gentlemen have any experience with the above item?
I like the fact that it is a 20mm bar, kinda in between the more popular 19 and 22 mm. thanks for any feedback.

 

I had one installed a couple of months back. I swapped out my original shocks, struts and springs for a sport suspension that came off a '09 JCW with <9K miles and figured I would upgrade my RSB at the same time. I do know that my car handles and rides a lot better than before, but it's hard to say whether it's from the RSB, suspension swap or all of the above. I tend to lean toward the last choice.
Eibach makes some good stuff and I have run their parts on other cars with good results. I don't think you can go wrong, especially for $125.