dakkottadavviss
I'd definitely prefer the XC3 for step up. I have the 2080 Super FTW3 with a PC-O11 Dynamic. I have to force the side panel shut on the PCIe power cables. They put the power connectors on the very end of the card rather than recessing them like the Strix models do. My card is 139mm long and the XC3 is close to 30mm smaller, which would make it fit in my case. I also might be able to control my fan curve in MSI afterburner since the XC3 doesn't have the asynchronous fan control.
have you considering doing a vertical mount? it's what i ended up doing, I feel like it looks better and solves the side panel issue.. with intake fans at the bottom it creates fresh air to flow as well.
I did have to use the phantek vertical mount though, the lian-li one leaves the video card too close to the fans for it to work.