Between the two mentioned rifles, the CZ M-3 is choice.
The 300WSM is an awesome round, as peyton said, the ammo of the 300Win.MAG. is more abundant, but as I tell the clientele, your not going to be so far removed from civilization that you can't find ammo for your rifle, and if you do venture far, have the foresight and plan ahead...take plenty of ammo!
The 300WSM or 300Win.MAG will dispatch anything that walks or crawls on the northern slab.
All said, I tend to agree with jimmAr, if you don't pick up that CZ, I would definitely get a Savage, you can't go wrong there....but as for me, I would leave the muzzle brake with Savage!