Being someone who has owned a ZR MKI & MKII as well as a ZS 180 MKI. I'd have to say its a real tough one. I just love the hot hatch thing and the ZR is a little gem on the road and you can really chuck it about but I have to say the ZS just nips it for drivability. The ZR isnt bad but the ZS just takes it for me. Handeling is that little more sharper and more point and go steering and thats on OE springs. Slap some Xpower ones on there and your laughing!!