Well, I didn't get to the shop in time to have an alignment done so I haven't really driven to hard. But to me, the Teins seem softer than the Racing Beat Springs that came on my MP3. It's probably just placebo, but I swear they're a little bit softer. So, in saying that, I can guarantee a stock like ride. I know the spring rate for the Tein Springs, but I can't find the rates for the Racing Beats anywhere so who knows. The Mazdaspeed springs and the MP3 springs will have pretty much the same drop. So, I say go for the Teins. I was selling my MP3 springs for $100 buck + shipping, but they sold now. One thing to remember when installing the Teins.....do not cut the bump stops. They tell you not to in the instruction manual.