I have mixed feelings about DFH. I'm only 21, so maybe I'm not mature enough to judge some of their beers. My beer preferences are for darker browns, stouts, and for session beers Belgiums and English Bitters (cheap beers in France). This is probably because I started drinking in Europe at an Irish Pub, so guiness is what "beer" is to me.
As for DFH, I like their 60 and 90 minute IPAs with food. On their own, their a little strong (not really a hop fan, but that will change as the only IPA's I've had are DFH and a Sierra Nevada Pale Ale once, which I liked). However, DFH makes some NASTY beer sometimes. For instance, I thought I would get all fancy for college graduation and have an aged DFH from the store. It was a Raison d'être, a good choice since I am a French/History major. It was a Belgian, with beets and grapes for some fermentable sugars. It was supposedly from 2000, so I was expecting the sweetness from the beets and grapes to be mellow. I like wine(I lived in France for 5 months), and I like cider, and I don't mind sweet beers. This one (the only one from a 6 pack I drank), however, tasted terrible. It was barely drinkable. It tasted a bit like wine, a bit like beer, and a lot like sour soda that was over carbed, and left a bad aftertaste. Furthermore, DFH has a lot of gimmicky beers, which I'm sure are ok, but not good from what I hear. So, all in all, they make good IPAs, ok others, and some ultra-terrible strange/unique stuff that is highly over priced. It has been suggested that ageing these terrible ones might make them better, but the worst beer I ever drank was that Raison d'être that was supposedly aged 10 years.
I like what they are doing for beer though. Where I went to college, many of the upperclassmen drank micro-brews like DFH, and DFH has been at the forefront of trying to expose people to good beer.