I had FSD's installed last Thursday. Definitely an improvement over the 70K miles old sport suspension I was riding on. I do notice a bit more bounce at times but it's not bad and an easy trade off for pothole explosions. The car is quieter over bumps but now I notice the squeaks that are just a factor of the car's age and normal wear and tear. Handling feels sharper and once the Continental DSW's I'm riding on now are toast I may actually go back to a sportier tire.
I did get an alignment for what it's worth.
2013 Audi A4 - Premium+/Sport/MMI/B+O Audio
2007 BMW E90 335i (retired)