Hunter you should save your money and not worry about buying cartridges loaded with premium bullets for whitetails. Standard Winchester or Remington cartridges will do just fine in the 139-150 range.
Heavier bullets in a given caliber tend to be designed with thicker jackets for deeper penetration on larger game. Deer don't need them.
And don't get caught up in the fictional brush bucking theory because it just ain't so. Any, and I mean any bullet will deflect if it hits a twig. In fact I've read the in actuality that faster rotating bullets recover quicker than the so called brush buckers like the 35 Rem etc. But they still deflect and may miss or worse, wound an animal without a recovery.