i found this thread via a Google search. I have a late 2015, 27" iMac, and recently used OCLP 2.4.0 to update to Sonoma. Personally for what I do, I don't see a lot of difference between Monterey, and Sonoma. Also, I use Firefox as my main browser, with Chrome secondary, and Safari third. Everything there is good. The main thing I've noticed is more apps have started dropping Monterey support for the latest updates. With this said, the changes in the latest versions don't seem like I'd be missing anything. However, it is nice to be on a slightly newer OS. I also have Linux installed on an external drive, so I can use that as well.