Hi Welcome to the forum,
Yeah the ride should be better as it's a slightly bigger car, so isnt as prone to bounce around like a rollerscake.
I believe there maybe two suspension options available to A3 B.E. When I ordered mine I had the choice of standard or S-line sports suspension (which is firmer) at no extra cost.
For the first few days mine was really harsh with the springs being brand new but has settled down nicely and wouldn't want it any softer. I opted for the S-Line setup as I wanted as best handling as possible.
I am positive you will be happy with the car & its setup.