I only drove it a small peaceful test drive so far.
No weird noises, no VSC light and it drive straight like on rails. So I guess I got lucky and didn't mess up the alignment left/right that much (or equally much both sides if you will).
Compared to stock, of course you feel the bumps in the road more.
But as a test I drove over a cobblestone pawed road near where I live. It was previously a jawbreaking experience, where the whole car was bouncing about. With the XTA in the middle rebound setting (I have it at 9 of 16 clicks towards soft), it feels
a lot more comfortable! You still feel the wheels hit every stone, but it feels like it's the
wheels being bounced around and the car is steadier.
With the stock shocks absorbers it felt like the shocks couldn't keep up, and would get "out of sync" and each subsequent stone would make the suspension travel exponentially bigger, with the result of throwing the car around.
Best way to describe the XTA, is that it feels like the shocks are working faster than the stock ones and thus keeping up with each stone and making a uniform minimum required travel for each stone.
As for performance it has less body roll as expected. I didn't push it in anyway though. And the of course I need an alignment. I think I gained a lot of toe out in the front, the steering feels a lot lighter.
(The test road: )