Your welcome
Glad to be of service.
On a more serious note. The advantage of I2S via HDMI is that the clock signal and the data are maintained in separate lanes within the same cable, and that I2S speaks more directly to what is native to the DAC (i.e. less conversion required).
By contrast, with AES or digital Coax the clock signal and data are multiplexed, and more translation is required on the DAC end.
That being said, so much is system dependent. What is your DAC best optimized for, and how best does it play with the source. And quality of the cables and system synergy are also very important pieces of the puzzle.