I also went with Tein, but still sitting in my room until I can get together with a couple guys to help me install them.
Tein states a lower drop compared to the Eibach. Quality should be similiar since they are so famous with their coilovers in Japan.
Lastly, Teins are cheaper in price than Eibachs when I did my research. It's green.
I have not heard any complaints on Tein or Eibach springs, but I have heard friend tell me H&R springs were too stiff on other types of cars (i.e. Honda). H&R is made in Germany, so I don't really know if they are of lesser quailty than the Japanese springs... one wouldn't have thought so.