I started DE around the beginning of 6th edition, I believe. They were an army I'd always been interested in, and one of my friends decided he wanted to sell his DE army, and asked me if I wanted to buy it. I did.
I enjoyed them a lot, even if playing against Tau and Eldar did dampen my spirits somewhat.
Sadly, the new book killed most of my interest in the army. For some time now, I've just been playing IG (which should give you an idea of how dull I consider our book to be - that I consider the IG one more interesting).
However, having seen the Haemonculus supplement (oh, so that's where all our flavour ended up), I've decided to give DE another go. We'll see how it goes, I guess.