Thanks for that mate, good to hear yours have held up so far. Out of curiosity how many km's have you done roughly since it was lowered?
Originally it had SSL in the front with reset rears (SSL height so I actually raised it to Super Lows. My CV is fine but I don't give it a super hard time, with that I mean I still have fun and wear out the rear tyres, but I don't load the driveline up to ridiculous levels. When you start doing that things will simply break. A mate of mine used to rev his car at 4K and side his foot sideways off the clutch, and then wondered why the axles keep breaking
Having said that, I do acknowledge the CV appears to be the weakpoint for the ZF equipped Utes.
Also from what I've read it's not the power that breaks the CV's/Tailshafts it's when the angle is changed the problems arise. Read a few post of guys who were towing or even had a big load in the tub and had it go on them, and their car was stock. But I understand what you mean by not testing out there limits, so to speak.