Kind of annoyed at this.
I just purchased the 18|24 last month and it's beyond my return window. Now the 18|24c comes out which is just what I wanted at the time... PreSonus should pull products from retailers when an upgraded version is around the corner. Regarding sound quality, they should be relatively equal? Looks like they use the same preamps. I expect the latency to be much lower with the 18|24c which is what I wanted the whole time since my PC doesn't support Thunderbolt, and the black scheme looks way nicer than the blue and silver to me...
Ah well, if anyone's in the market, I think I'll be posting my 18|24 on Reverb...
Edit: I rushed with my judgment on this one... Apparently it's USB 2.0 over USB C...