ok I've decided that the strut/spring combo on my car just ain't cutting it anymore. So i've decided I'm going to either replace the tokicos w/ koni yellows or replace the entire thing w/ tein ss or Apexi WS. so which should i do?

H&R sport w/ Koni yellow
or
Tein SS
or
Apexi WS

please let me know the differences between the 3 other than the obvious height adjustment.