When I bought my GLite, the owner threw in a Shunyata <mumble> power cord. It's one of their lower end models ($125-ish). It was sufficiently excessive (30A rating, absurd gauge) that it dragged the DPS/GLite away from where I wanted it. I use it on my 5 ch Rotel amp now, which isn't going to be dragged anywhere.
I'm afraid my scientific testing on the Shunyata (I think it's a Diamondback, but I can't be arsed to go look) is about as extensive as what I've done with the Quails: I plugged it in, and went on with my day. I will say this: the IEC connector on the Shunyata, while transparent and fancy looking, doesn't grip nearly as well as the ones on the Quail cables that cost 1/20th the price. This is especially annoying on Rotel components, which only have two pins in their IEC jacks.