I'm thinking of adding a bit of spice to my dark eldar list by putting in some harlequins. I usually play a combat oriented army with two sniper squads. Also, heretic that I am, I often tend to leave the raiders in the car park. They may be great value, but so is EVERYTHING in the DE list, taken individually. Anyway the point is I am not sure what I could add from the harlies list for best effect, I can take ANY dark eldar army as I have over 6000 points worth of models and have at least 1 squad of everything so don't worry about wonderign what I have that you could combine harlies with.