I was one of the lucky guys who received one from the very first batch. From day one Maurice has never been very timely but if he is late there is normally a good reason. He has been constantly testing, tuning, and tweaking the hardware in an attempt to make the most reliable amount of power and keep up with Mazda's changes.
So far I have put on over 10k miles with the CZ and I haven't had any problems. When I returned the unit to be upgraded I felt an immediate difference in power above 6k RPMs. I couldn't wait to reinstall the unit and bring the car back to where it is supposed to be.
As of last week I finally have all of the pieces for Stage 2 (Greddy tuning software, CANscan monitoring software, and Random Tech mid-pipe) and I am looking forward to tweaking the fuel maps to match my car. It's all good! :D
Check out http://mystorageplace.verizon.net
for a few videos (including Stock vs Stage 1).