I just got a stock 650 cable modified to terminate in a 4-pin XLR connector. It was only $60 on their eBay page and I figure, for now, that'll do. I was eyeing the Black Dragon and Silver Dragon cables but folks at SBAF recommended against them for now. I'll get more out of my money with a better DAC than by spending $300+ on a cable, but I definitely do intend on getting to that point someday.
The upgrade from Vali 2 > Jotenheim and then single-ended to balanced for my headphone cables has been enormous and I'm looking forward to just enjoying this for the time being while constantly thinking about a Gungnir Multibit...