Not meant to be negative at all, drpino. Just wanted to point out that many similar threads like this can be found in the forum, although the starting topic was usually about a particular problem and at the end ended out of topic, some vent their dissatisfaction and many otherwise.
I too had RMA my 712A twice but not because it failed or major problem, just because it won’t burn my YUDEN000-T01 below 20 PIEs. I think if I keep my early 712As they would be fine.
Regarding 716A, I “tested” the first batch TLA0000 and returned two of them at local Bestbuy. I believe everybody knows about TLA0000 (ie not good at writing @16x and questionable scanner). But I wonder if there is still people who owns TLA0000 and how it perform with the new firmware(s) and Plextools.
Both of my 712A and 716A are still working fine btw.