I run 2, and I'm the UK Conehead dealer. Heres my obserevations, having run Bandits, Morbarks, and a whole host of other chippers -
The Chipping drum, housing hopper, chassis and tanks are extremely well built. The belt guards and the top roller guards look horrible. The discharge chute on the big (22"+) models is not heavy enough. The Infeed is extremely aggresive, and the cutting system seems very smooth and efficient. The rest of the chipper ie. engines, clutches etc are the same as all the other Michigan brands.
The DC50 is an awsome 12" capacity machine.
The paintwork is very poor.
Against other brands, they are slightly dearer, but they are very miserly on fuel, and the knife life is excellent. Aslo very easy to work on.
I have some video footage of various machines on my website.