-And in that vein, the Rogue Trader adventure The Soul Reaver has (almost) everything you could need to use Dark Eldar as adversaries. I've used those stats in Deathwatch- here are my observations on how well they port over.

I was not aware of that! I will have to procure that for myself. Thank you!

You should find that the Soul Reaver stats are up to the same standard as the Children of Isha ones - they come from the same source, afterall. I wrote all the non-Adventure content in Soul Reaver (the Kabalite Warrior PC rules, the bestiary, the armoury, the vehicles and the starships).

As an aside, I've now moved hosts and am now beginning the slow process of rebuilding. I thank you all for your patience and understanding.