Sorry to hear that, hope you recover with no lasting ill effects. It's easy to get carried away on bikes like that and forget what they can do. As I mentioned, I've never personally ridden the KX 500. Some of my friends have, and I've read the tests on it over the years. The CR 500 Hondas I've ridden were the first two. My friend had the air-cooled .'84 model, and his brother, later on, bought the '85 which was the first water-cooled model they made. The '84 had a tiny bit more max power but the '85 had more torque and a broader powerband, with a scarier hit at the midrange that would knock your socks off. The '85 was quicker overall, of those two, not sure how it would compare to later models but I'm told they mellowed it a bit for '86 or '87, can't remember. I almost bought the '85 CR 500, but couldn't quite swing the financing and ended up buying an '82 Yamaha IT 465 enduro that was still sitting on the showroom floor. In low traction situations, it could actually pull away from the CRs even though way down on horespower in comparison. On pavement or in good traction though, forget it. That IT though, had power everywhere and was super smooth. Even so, I'd get over my head and nearly got hurt bad a number of times by being too complacent. I'd have to say though that the scariest bike I ever rode was my '74 Yamaha SC 500. It didn't have as much power as the other bikes mentioned above, but it "felt" like it had a lot more. Explosive and with that old and terrible frame and suspension, I don't know how I survived on it. Sure was fun though :-) You gotta keep your focus on a big bore 2stroke or they will bite and bite hard, lol. Anyhow, hope you are back in the saddle again soon. Take it easy