gs430vsZ32

I’m debating between Tein CST vs. stance GR+ coilovers. I know tein is brand name and over $200 more than stance but the price isn’t the matter at this point. I’m concern about the spring rate and height adjustment.

Tein CST
9K front 8K rear
1.1” front 1.1” rear

Stance GR+
14K front 10K rear
175mm front 200mm rear

I used to have OE shocks w/ tein S tech spring which is 9K front & 11K rear on my old 99 gs400. the drop was around 1.7” front and rear. I like its drop and firmness. I do like high speed cornering. It was still bouncy for me sometimes. This time I’d like to try coilovers setup for 02 GS430. I don’t track the car or autocross or anything. I like to drive fast sometimes on the freeway and curvy roads that’s all. My question is will tein CST softer and bouncier than tein S tech w/ OE shock when I do high speed driving on curvy roads. For stance GR+, will 14k front too harsh for daily driver GS. I guess rear seemed to be OK since the same spring rate with tein S tech. What do you guys suggest?

For suspension, what I have on my car is RMM front stb, racing hart CSP-10 18X8.5 245/40 front and 18X9.5 275/35 rear. Tires are Goodyear eagle F1 asymmetric