You could not go wrong with either of the choices you mentioned. Even the least spendy of the Knight rifles are very good as are most all the rifles made by TC. I have the TC woods Rifle which was the pre Black Diamond rifle. It will handle 150 grain loads and will shoot an honest to God 1 1/2 inch group at 100 yards. That with two 50 grain Pyrodex Pellets and the TC Mag sabot with a 300 grain Hornady XTP bullet. The Woods Rifle is not made now but the Black Diamond has replaced it and is a fine rifle. Believe me two 50 grain pellets is all it takes with the 300 grain bullet. You don,t need that heavy a bullet but I had several boxes and they shoot great in my gun. I have not had a Knight but my hunting partner has one and shoots the Barnes X muzzle loader bullets in it. Great rifle and great bullet. I have had a couple CVA rifles and they were good but not in the class with the Knight and TC. Hope this helps you out.