I'm actually quite astonished at how effective DHs are at soloing in mediocre gear. My main character is a barb that is almost through Act2 inferno but it's a real slow go as I absolutely need the AH for gear. By comparison I leveled a DH to 60 in about 35hrs, bought him 500K in gear on the AH as a quick start. With that I proceeded to clear Act1 Inferno in mere hours, quickly catching up to my Barb. Now given that the gear on my barb costs 10x that which is on my DH, this new toon has become a very cost effective farming toon.