Bought a uO_C and a uTemps Utile from @MatrixModulator . Buying custom made stuff can be a little nerving. I had no problems. Great communications. Delivered WITHIN the time frame promised (he finished a couple of days early and shipped early). MM checked and double-checked I that I was getting the modules and panels that I wanted. I'm giving an A+.
The only thing I can even think to mention that I didn't like was that the cables included seemed a little short unless you're plugging in directly over a power supply. I'm using an Intellijel case where the power is under the bottom rails. I swapped the cables out with a couple of units that were closer. On the plus side, he goes the extra mile ensuring that the module won't fry if you plug it in backwards. It will work with the power cable in either orientation.
The bottom line is that he'll be the first person I contact if I need anything else built. I will definitely repeat.