Nice review!

One thing that did make my eyebrow quirk was this:
First, let me say that DualMiner runs hot. One forum member measured them at 96°F.
If that's considered hot, you should move to one of the polar regions, as your body's core temperature is a few degrees above that

The datasheet mentions a max operating temperature of about 185°F, figure at least 10 degrees lower as measured on the package and another 15 as measured as an average on the heat sink, and below that it should be fine. Would actually be interesting to see a temperature vs HWerror plot ( not suggesting you do so - for all I know the things self-destruct at 110° despite the datasheet claims

)