My thoughts on 120 and DFH...
I think most people buy it an expect a super hoppy monster - as they should; it's labeled as an IPA with a ton of hops. The problem is, it is not an "IPA" and it's not super hoppy. When I had my first bottle I was a bit disappointed, but after letting it warm up to near room temps it really brought out the flavor of the malt and a delicious floral/herbal hop aroma and flavor became evident. Very smooth, very malty ('syrupy' as others have said), very unique. This beer wasn't made to be balanced or to punch you in the face with hops; there are hundreds of good examples of both out there. Rather, I think it's more of a 'beer liquor.' It really is just as much about the hops as the malt. Grab a bottle, age it for a year or two, pour it into a snifter, and make sure it's cool/warm.
Oh, and their 'Heaven and Hell' is awesome. 120 layered on top of WWS. Balla!
The 60 minute is awesome, the 90 minute is awesome (letting it warm really brings out the hops, much like the 120). I've never tried the 75, that is definitely next on my list.
Sure, a lot of their beers are "extreme," but how many micro breweries are out there that make just another IPA or pale ale or brown ale or stout or IIPA, etc. etc. etc.? There are awesome breweries out there, of course, but most of it is only good and/or so similar to dozens of others it's forgettable. That's what I like about DFH; they make an awesome IPA and everything else is unique and different. I don't enjoy all their offerings but I can appreciate the difference and enjoy it for what it is.
Well, that's it for now. This wasn't in reply to any specific comments, just my opinion of the 120 and DFH! But seriously, let your 90/120 warm up a bit!