I have been using the Slim armor with my 6 Plus the last few days and got the tough armor today to compare. I was surprised that the tough armor was much weaker at the volume rockers compared to the Slim. It is quite easy to bend compared to the slim. Perhaps because the soft inner shell has a bigger foot print at the volume rockers. The slim is not quite as thick as the tough armor, but it sure seems more rigid. If you are worried about bending issues, stick with the slim armor. The weakest part of the tough armor case is also the weakest point of the iPhone 6 Plus. The case bends way too easy. In fact, the Spigen Thin Fit case is more rigid than the slim armor or the tough armor. That case is very hard to bend. My choice for best bending protection is the thin fit followed by the slim armor. The best overall protection would be the Slim Armor.