I am a big fan of teh Vogtlands since i had them on my Project S4 Avant car. My wife drove through and post pregnancy with these without complaints. At the same time they made the S4 feel much more buttoned down.<ul><li><a href="http://www.startupracing.com/B5ProductsSuspension.htm">Free Shipping here.</a></li></ul>

I'll let you know how they feel. They could be a little stiffer since the A4 weighs less.

<img src="http://static.flickr.com/53/140363203_dcfd5e968c_o.jpg">

The S4 is a lot heavier up front, so the springs could feel stiffer on an A4. I'm leaning towards the Vogtlands because they seem to be the best price/performance wise. So long as they're not teeth-shattering rough.

I want to upgrade from my H&amp;R race/bilstein

Is the adjustable and rebounding worth it?
What are the spring rates for the PSS9?