I think when it's really fresh (like a fresh keg on tap), the DFH is grapefruity. But I've only been able to get some aged/older bottles and it's much more subdued than my version.
I was at a graduation party yesterday, and an aquaintance was talking about a friend's awesome IPA and that it was his favorite beer. Just then, the friend walked up (lschiavo from this forum) and laughed and pointed to me and said "it's her recipe!"
I think the reason it's so good is that it's hoppy, but not bitter. I love a good firmly bitter IPA of course, but this beer is not very bitter and so it's refreshing and easy to drink.
I've been dabbling with lowering the OG to try to make it a session beer for quite a while now, but my favorite version is still the original!