Lummox, you sound pretty ignorant. If you are not falling, you are not pushing it. Falling is a good thing, in that you are pushing yourself to grow expanding your comfort zone and learning how to fall safely, etc.
Tele, I vote for nuts. Their security depends on simpler, more predictable physics. Although the best placement depends on what the rock gives you to work with, of course.
As a side note, I am willing to bet that the cam placements that you have had fail, were small cams. Their expansion range is smaller corresponding to a smaller margin for error in placement. It helps to place them in the narrower half or their range and to set them with a really goood tug or two ( as you would a more marginal nut placement) in the expected direction of loading.
in my opinion youre confusing training with climbing.
i prefer not to fall on climbs. somethin about good style and shit.