*cough* RCE Yellow springs *cough*
Guys, the TRD springs would likely be pretty good. But they're not magic!
Yes you wouldn't have as much trouble with warranty, but really that just covers your shocks in the case they blow out. Aftermarket springs would not affect any other aspect of your warranty.
Get a good quality spring with a mild/medium drop of about 20mm....say RCE Yellow or Swift or Eibach Pro-kit (not sportline) and you won't have to worry about blowing your shocks anyway.
Get a RCE Yellow + RCE Swaybar set for a complete package for a good price. We'll have a package with Bilsteins soon too.
I do get the OEM thing...we were way into the STI Japan "pink" stuff back in the day. It sort of became our target for some of the parts we make. An OEM-like Sport option that just turned things up a notch, looked good, and was still comfortable, streetable, and durable.
Just a few thoughts. I am surprised that TRD is not all in for this car.
- Andy