just wondering what your humble opinions are for my situation...

I am looking to get into trail mountain biking and spend 1000-1300 cdn on a new unit. I realize all components are upgradable, but am wondering where to focus my $ on the initial investment. For example, I am wondering if have a better forks may be a bit more important than having better brakes.

Also, at that price range, any suggestions on components and/or bikes?? I am currently considering Trek 6700, Cannondale F600, Rockhopper pro disc (if avail in Canada), Rocky Mountain Vertex 10...

Thanks!