Ho
@jonobin! Let me give you my opinion regarding my late 2013 iMac (see my signature below).
Assuming that with Catalina the performance of my the Mac was 100%, with Big Sur the performance went sl 110-120%, with Monterey to 150%, with Ventura and Sonoma to 200%, but it is difficult to say in what percentage Sonoma was smoother and snappier than Ventura. The fact remains that I would never, ever go back to Catalina, which, moreover, I installed anyway in the internal SSD that belonged to the Fusion Drive.
Regarding Sequoia, so far I would say that it represents an evolution of Sonoma in many small respects, but performance is now so fast that it makes my Mac look like a new Mac and it is difficult to notice further speed increases. Of course, even if the applications are equally fast, it is clear that the hardware has limitations and for example one cannot expect Final Cut to work as it does in a Mac M3 and convert movies in lightning fast times... Nevertheless, I work well with it and Photoshop and even Autocad 2024 satisfy me as well.
Well, Sequoia has made
a small and important change that until now (it seems to me) had not been noticed and reported by others.
Until now, then, when trying to eject an external device such as a disk or USB stick or DMG image inside which a program was running or a file was busy or Spotlight indexing was in progress and so on, macOS would pop up an annoying window warning that ejection was not possible. The user was then forced to click to close the warning and try again later, often with the same result.
With Sequoia, on the other hand, a warning message appears with a
"Close when done" button, and this is a real relief because you continue to work quietly...