I've never really been a huge fan of suspensions manufactured in Asia because they tend to go overly aggressive on valving their dampers, but I guess the best answer depends on where you're going with your car. Always very highly sprung and may be a better choice for a Time Attack car. Friends of mine that work on Grand-AM cars say they run JRZ or Ohlins setups typically, which are obviously crazy expensive but amazing suspensions, but then run Bilstein for endurance racing because of the durability of the dampers. I am pretty sure they make PSS10's for the 370Z although they don't seem widely popular. I've always loved Bilstein setups I have had or ridden in. KWs are never a bad choice on any platform. I had BC coilovers in the past on another car and they were really harsh and the entire suspension corroded and locked up so badly that the coilovers were nearly garbage afterwards. Another friend of mine had 3 out of 4 dampers fail within 5k miles on the suspension. Just my $.02
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