On the contrary, I chose Unitronic over APR and ED, after months of exhaustive research finding countless cases of APR and ED issues. Not to feed the trolls or start a tuner war, but I wanted something that I knew would a actually work and not blow up my expensive new car. Note that I ran a Stage 2 APR mk6 GTI for ~70k miles, before buying my mk7.
The fringe Uni cases that you are references are the exception to the rule, and you can see Uni representatives actively supporting, until the issues are worked out. I emailed APR in the past, without response. I understand ED is notorious for lack of customer service. Unitronic responded immediately.
You will always have cases of people thinking the grass is greener on the other side, so of course people will entertain the idea of a few more horses and significant torque increases. This is human nature.
I, personally, would rather still have a crazy fast car (currently Uni 1+, going to Stage 2 in a matter of days), without the frustration of awkward power delivery (APR on my mk6 and stories of more of the same on mk7), blown turbos (APR & ED), and weird glitches (ED). (I almost went JB4, since George is the best customer rep out there. Maybe I will stack in the future.)
About the limited data on Uni cars:
My guess is that Uni customers have a more conservative mindset and are less likely to dyno their cars or race them, quarter mile track or otherwise.
TL;DR
Uni just works and feels like a normal car that will shred your socks off. Unitronic drivers with conservative mentality are less likely to dyno and/or take their cars to the strip.
