I also shoot a DZ and have not had a single issue with mine to date. The hardest part of installing it was tying into the buss cable without a press but if you buy one through a shop they should set it up for you.(a good shop will)
They make the dz in a couple of diffrent models. I have a guide series which has the micro adjust features but all are functional and the micro adjust features are not neccessary. I just like to tinker
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Bottom line, the DZ stands upto the expectations of the price tag.