None of them are an EK.
How much travel do you expect from a stock dampener? How much do you think a spring compresses when you set a car on it? Why are you attempting to compress a shock that much to begin with? How did you manage to "mess up" a shock installing a spring?
Read the box on your S-Tech springs. I guarantee you it says "Stylish Spec Dress-up Master Kit" right? That means it's a show only part with zero performance or handling aspects. It's nearly as soft as a stock spring. Just saying.