Zac, Dhf has one big weakness up front, and that is mud shedding. I used to run them flat out for years, couldn't fault them except for that. I find hr2 is a better front tyre.. can't feel any difference in performance and definitely better shedding in damp/ wet conditions.
I've been running an aggressor 2.3 out back, replacing a dhr2 that I was very happy with, and so far very happy with the aggressor too. It does lose traction easier than the dhr2 on rocks and steep, and haven't ridden it in really wet conditions yet, it's a great tyre but I'm still swayed toward the dhr2 for all round performance. They feel very similar in terms of rolling resistance but I feel the dhr2 goes that bit further when things get rowdy, rocky or wet. Thoughts?