This was my ZRX1200 which I owned from '02 - '04.
and this is my GSX14 that I currently own (since Feb '06)
Both are great bikes. The ZRX has more top end, the GSX has more bottom end. The ZRX more HP, the GSX more torque. The GSX is F.I, the ZRX carby, the GSX 22L tank, ZRX 19L, GSX 6 speed, the ZRX 5 speed. Both weigh about the same ZRX 223kg, GSX 225kg ( get an AKra and lose 17kg ) Handling is about the same on both on the road - havent done a trackday on the GSX yet but did half a dozen on the ZRX. The GSX is more refined and feels like a new bike. The ZRX is not as refined and feels like an older bike.
I loved my ZRX and will always have a soft spot for them, but I also love my GSX and theres nothing else Id rather own. For me, thats a big statement!