Bilstein is the best... For our application, Sport Bilstein is the only way to go. Bilstein HD and Sport has the same valving and the only difference is the length of the rod to compensate for shorter spring. The ride will be stiff but we have no other option.
Do yourself a favor while you are doing this job... get new spring pads if you have not changed them... It would make a world of difference in vibration damping. I prefer thicker one for better damping but some of you rather have the low low rides instead. It is not that much of a difference in height. 1/4" maybe at the most.