I just bought some H-sport S4 sway bars (used), tell me how great these things are going to be.

you will love them ,have them on my a6 very tight
fell good

I think it makes a more dramatic difference on the 1.8T's because (1) they aren't as heavy as 3.0's, and (2) the OEM sway bar is smaller than the 3.0.

I didn't set mine to the most aggressive setting, so maybe that's why I didn't see as huge of an improvement. The steering seems to feel heavier though.

It's easy to install, all you need is a set of ramps (or jack + stands) and basic tools...torque wrench would be great! Just remember to put some liquid thread lock on the bolts though!

the thread lock, would hate to lose something down there. Can't wait to take on some cloverleaf on-ramps!