I've got a ZXR250 C, had it for about 4 months and I have ridden 4 different CBRs and they feel very similar. I don't want to get into the specifications of the bike. Here are my comparisons for the bikes listed in categories Speed: CBR faster I've only ridden one ZXR (so i don't know if my needs a carby tune, but i'm due for one), for speed the CBR beats my ZXR on more then one occasion. Handling: ZXR The ZXR feels alot more stable and planted around corners no doubt, i lean alot more on a ZXR then a CBR simply because i'm alot more comfortable on it. The CBRs throttle response is instant and can be jecky on corner exiting. The ZXR feels alot "beefier" and "bigger". It does also feels heavier. These are both great bikes, But for me the winner is the ZXR. The way the engine screams, it's stabilty and confidence it gives me around corners. How it looks, some people are very surprised when i tell them that it's a 89 model. This is just my opion if you don't agree with me and have ridden both bikes I'd like to hear from you. or if you have any questions I'd like to hear from you.