I have the ZX-5. I had a XX-4 WE. I sold it, wanted a new car so I bought the ZX-5. The ZX-5 out of the box ($300) is fragile. I upgraded to the aluminum shock tower mounts and front arm holder(rckenon.com $80 total), and Carbon Works chassis, top deck, battery strap and shock towers ($130). The car is now extremly tough and hooked up. I highly recommend this car. They are all competetive and tough after spending about $500. Good luck.
