I had been using the 1.3 preset:
Slot 1: 400000
Slot 1v: 27
Slot 2: 700000
Slot 2v: 38
Slot 3: 100000
Slot 3v: 56
Slot 4: 1300000
Slot 4v: 68
Using this preset I basically had 4-5 reboots in a matter of 4 hours.
I liked the speed while it was functioning, but have since moved to the 1.2 preset (I'll spare the details), but what I'm wondering is that from reading a fair bit, I'm seeing higher voltages seem to equal greater stability, and so I'm wondering at 1.2 or 1.3, what are safe voltages to play around with that would fall in the category of "high voltage"?
I've been searching the forum here, and at XDA, for answers for a while now with no luck - so if this has been a common discussion and gets no responses I'll take the hint and try harder.