The Aethos is the nicest road bike I've ever had. I have a carbon Cervelo RS, but the Aethos has a ride quality that is just smoother and nicer. I think it's probably because of another decade of research and understanding what makes a nice frame. Maybe it's placebo, but the Aethos feels like every pedal stroke transfers into more forward motion than compared to my Cevelo. The Rival AXS component group is a dream, it's quiet, shifts perfectly and is fast.
The Creo is a nice bike, but after riding the Aethos on the road I only want to ride the Aethos. Hence repurposing the Creo to gravel and commuting duties where it's better suited.
My experience with the Aethos has been very positive. Ironically, I had my eye on a Cervelo Caledonia, but when SRAM release Rival AXS I just wanted to get a bike with that component group and the Aethos was the first one that kind of met what I wanted. Now you can get a Caledonia with Rival AXS, but back in April when it was announced I didn't know if it was going to be 2 months or 2 years until such a model existed so I went for the Aethos. I might prefer the Caledonia if I were buying today, but I'm more than happy with the Aethos.