OOO, I do love Ebony Purple, but that's black purple not really an aubergine. I think of Aubergine as purple burgundy.
If you want a FAB ink, try the Stipula Purple IG, it's on sale for 1/2 off (I think I bought it at Pen Chalet). It has been a wonderful performer. That being said, I really like both the De Atrementis and Rohrer and Klingner aubergines.
Sadly, the Stipula inks are prohibitively expensive in the UK. But I was grateful for the recommendation, as it sounds right up my alley!