the only thing i don't like about the silver cables is that i have to carry around an extra battery, as they seem to drain my batteries faster than star quad does. but, for the sound, it is worth it.
Just out of curiosity, have you used a DVM to test your silver cables? You may have a high impedence short causing a drain of the 48V but not enough to stop your mics from operating properly or trigger the fuse in your battery.
Edit: Be sure to use the resistance test on the DVM and use a setting in the 100K range if your DVM does not autorange. A high impedence short is not likely to trigger the continuity detection test mode. The simple LED cable testers that people make won't detect this condition either.
I've arranged to travel to Vatican City to have my cables blessed by the Pope.
You should be aware that if you do this, you won't be allowed to ever unplug the cables unless they go completely bad.