Finally laid down a couple thousand miles with this combo. It seems to me that the springs are out muscling the koni STR.Ts. Ride isn't great. Its not soft and cushy. And it doesn't handle great, either. I hit a mark between great handling/harsh and ride comfort, but it does neither.
That being said, my daily is an E92 with the sport package.. So I have nothing but totally amazing to compare it to. Apples and Oranges.