I bought a 380 MXC last spring, think the tanks different and a couple of other very minor things.
First, it's not a street bike by any means. In SD I could have licensed it, but trust me, it's not..
The thing was nuts and in all honesty I was 1/2 afraid of it. 1st-3rd you couldn't keep the front on the ground, except with exceptional throttle control. 4th-5th, all it took was just a tiny bit more throttle and the front end was up.
Now while that's fun in conditions that are appropriate for it, it's not so fun in other spots.
Last thing, it was an absolute bi**h to start. They have so much compression and even while trying to get it just past top dead center to than kick it over, you'd damn near break your leg giving it a good kick.
I'm 6'2" with a 36" inseam and while I could start it standing in the open my best bet was to lean it against something and prey for it to start on the first kick.
I had my fun with it for a month or so and than sold it on craiqslist. Had alot of younger guys wanting to buy it, but I flat out refused to sell it to anyone that wasn't experienced. Finally sold it someone that drove 9 hours to come and get it and had previously had a CR500 and knew what he was getting himself into.
edit: Very little use since new Probably for many of the same reasons I listed