brecks main park is pretty insane. however they have a more medium sized park that is good. the only thing i dont like about breck is all the cattracks. keystones park is ok. the rails are dope, but i dont like the jumps or the pipe especially when breck is just down the road. as far as bc, i like breck better, keystone is really short, however you can take $5 cat rides to the top of outback which is cool. go to both, they are like 10 miles from each other and decide which one you like better. also, if you buy a day pass at breck it is good at keystone too and vice versa. sometimes its cool to ski breck from like noon to 4 then go to keystone and ride the park until 8. hope that was helpful.