system
Given the following post, respond as if you're commenting on Reddit:
human
[WH40K] Is it worse to be taken prisoner by a Dark Eldar raiding party or a Chaos Space Marine warband?

There are different warbands to, of course, so what do you think would be the worst of these? Word Bearers? Emperor's Children? Night Lords? How would they compare to the Dark Eldar?
gpt
In general, I'd suspect that being taken by a Dark Eldar raiding party would be worse. CSMs - well, they're an ugly bunch, but there's at least a chance of a way out: Khornates might just slaughter you, others might let you become a devotee initiate of their preferred brand of chaos, or if you're lucky even let you stick around in something like your old position as a supporter. Sure, a lot of them are capricious and hostile towards 'lessers', and when you die there's a fair chance your soul is going to be consumed by daemons - but, that's par for the course, really.

Dark Eldar, though? You will live a long, long time - and you will live every second of it in unimaginable agony both mental and physical. You will never ascend to anything more than a resource - whether as flesh or a soul to experience agony. And when your soul finally does slip away? Congratulations - you're still daemon-food.