I've got the 2007 model and have been riding and racing it for a year now. My pals loved how it handles and have since bought 3 more to replace the Motovert 125, but these are 2008 models.
(In my humble opinion the '07 ones with black Kayo forks, gold plated sliders, are better bikes than the '08. The 07 frame also look better.)
This bike is bigger than most other pitbikes. The size gave it advantage over "smaller" bikes like the Motovert, as the DHZ rides more like a proper dirtbike. The BR 66AR shock works well, but I think the forks are abit harsh.