I can try to quantify it, but as I have never own the old silver cable I do not know how it compares to my silver/gold cable. I have also not heard the uBer cable, so I cannot use that as a comparison. However, I can give you a rough estimate that the improvement is like me swapping the Tralucent silver/gold cable to the cheap FiiO RC-WT1 or the Westone Epic replacement cable which I have both with me. Something like that.
Basically, the hi-res tracks have a stronger punch to the music compared to their 16/44 counterparts and the music sounds slightly deeper, i.e. more depth. Mids feel more pronounced/forward too because of more energy in the hi-res versions. It is like every note in the hi-res version is shouting out to you "I am here". Another analogy I can think of is like those touched up pictures you get from an expensive photo shoot in a studio, where the photographer will usually touch up your pictures to enhance the saturation/hues of the RGB channels before giving the final version of the pictures to you. I strongly suggest you all do this A-B exercise and try it for yourself using your best rig. Let me know if you guys can hear the same thing.
I just reread this and noticed that you provided an answer.
Thanks. It seems what you're saying matches up with what I thought. Thanks.