dequalsrxt wrote:
But then again, if you chop before you timestretch, you're timestretching a much smaller sample, which should give you less artifacts in the end, 'specially if you're stretching longer samples. .
This is true. Time stretching has to "make up" samples to fill in the gaps caused by making the sample longer. It does this by working out the average sample value from the previous and next samples. There's other stuff too but that's the basic jist of it. This works best if it's done in small increments. The more stretching the more artifacts appear and it starts to sound smeared. It also messes with the attacks on waveforms. This is not a good thing with drums as you can lose a lot of the impact of hits.
As a wise man once said, "chop small" and you'll have less need for time stretching. And if you still need to stretch the small samples will need less stretching and sound better.