Key is matching streamer to dac, purchase as package. Lots of nice dac's with optimized usb boards, which means quality clock, dedicated power supply, galvanic isolation all within dac, in this case optimized usb rendering from streamer and you're covered.
The problem with I2S is twofold, one is no standardization of pin outs or connectors, two, no conclusive evidence I2S superior to optimized usb. It would be a rare case where one could directly connect a streamer to dac without need of some conversion of pin outs via dip switch or custom built I2S cable.