iMac late 2013 best OS

Hi!

I just upgraded my late 2013 Mac with an external SSD SATA3 256gb from Kingston.

The other specs are 8gb of RAM, 2.7 GHz intel i5, with Intel Iris Pro 1536 MB. I don't plan on opening the Mac to further upgrade it as its >10 years old and I don't want to pour money in it.

Right now I'm running the latest supported MacOS version, which is 10.15 Catalina, latest security update in 2022. Would Big Sur run any better now that I am booting from the external SSD? What are the advantages of, let's put Big Sur or even further versions like Monterey, Ventura, Sonoma... is it worth upgrading for QoL features?

Also, I have an ipad pro M2, and I would appreciate using sidecar with it. Iirc, it is not supported on Catalina.

Glad to hear from you ;)

submitted by /u/Loose-Assignment3203
[link] [comments]