i've got gc coilovers on kybagx, i've had them for about two months and i really like the ride, its nice and firm but not too harsh....the adjustibilty on the agx's is great too! and as for the warranty...if my agx's blow i'll just raise my car up a little hehehe

 

And they are a great bang for your buck.

I love mine mated with Sportlines.