I feel super at-home with 5 reps in most things (3 reps is happiness, too). The 8/10/12/15/whatever school definitely seem to put on some good size... which seems to me to be a good foundation for strength. I sometimes feel like it's harder to get stronger without getting bigger first, though some olympic lifters certainly don't seem to care much for size. I despise the pump, so high reps is a tough mental exercise for me. (If you don't think it's mental, try doing 100 curls with 10lb dumbbells without stopping.)
Paul Carter of Lift Run Bang talks about such philosophies a lot, actually - worth some reading.
