As a long time Chrome user, I decided to test Firefox with my recent Fedora 38 installation. It really seems to have improved a lot since last time I used it. It feels fast and snappy. I think the differences described in the benchmarks are small enough to not perceive any difference. And Firefox seems to work better with Wayland than Chrome. For example, Chrome fractional scaling on Wayland was broken by default but it worked out of the box in Firefox. I also have the perception that Firefox is using less memory than Chrome, but I actually haven't properly measured it.
The only feature that I'm seriously missing is Chrome's profile management. I use this a lot to have completely separate browsing experience between Work and Personal stuff. Separate history, separate cookies, separate extensions. In Chrome this works like a charm. It always remember my open tabs on each profile and it allows me to customize the windows of each profile to easily distinguish them. Firefox does have profiles, but the user experience is miles behind. I also tried the Multi-Account Containers extension, but it's not very good either.
After seeing the direction that Google is trying to take with WEI and similar stuff, I'm really looking forward to move 100% to Firefox.