Wow, three C8s. Any specific reason why you replaced? Based on wait times, it would be interesting to hear your timeline ie ordered 2021 before receiving 2020? ordered 2023 before receiving 2021?
I agree with you on which car looks better
I am also interested in your comment about sound level in the two cars as I have read some reviews that state the HTC is much quieter with top down as compared to coupe with top off.
As far as transparent top, if anyone is interested, make sure you order with the car. I purchased separate and was really expensive. Also I noticed I had to drop my A/C 2 degrees from 22 to 20 on sunny days.
As far as roof weight I pulled this from another forum (not verified):
15.5 lbs - Body Color Painted Top
14 lbs - Carbon Fiber Top
17 lbs - Transparent Top (shipping weight was 20 lbs but that included 9 page install manual)