ultralars, I agree with hungry4more. Training all the rep ranges would provide the best results for your body.
I should have mentioned in my previous post that I now train almost exclusively with just the "big three" lifts (squat, deadlift, bench) and also military press. My earlier training philosophies included many different exercises at different rep ranges. After doing that for a few months, I came to the conclusion that doing lots of different exercises at all different rep ranges was just too cumbersome for me to keep up with (e.g. charting progress from workout to workout) so I started just doing the big lifts each workout with different rep ranges throughout the same exercise. Not only has my progress improved, but I'm in and out of the gym in less than an hour and I feel a lot more "amped up" instead of being dead tired at the end of my workouts.
Point of all this is I would recommend that you train according to your goals, and don't let extra details get in the way.