Jim - this is a good point. While I wound up with a DSU-II (they seem more plentiful) the DSU-I with it's module-based programming is probably more sustainable.
That said, I need to finish grounding and protecting my gear. Hoping to install a direct earth ground to the DSU-II grounding clamp, and also install 66 block surge supression as well to try to keep things safe. Oh...and a UPS, or possibly a good power conditioner with the OEM battery cabinet. Or both a UPS and the OEM battery cabinet, since I have other equipment I need to have backup power for in that space anyways.
