OK to update to Big Sure on my MacBook Pro 16"

i would say that if you have a good backup, go ahead and upgrade. in my case the upgrade went smooth, with everything in it's place. the user feel hasn't really changed. most of the upgrade seems to be "behind the scenes" stuff for security and performance. but, as with any software upgrade, it's good to have a backup incase you need to revert.

just some food for thought:

1. if possible, use a wired ethernet connection to download the OS.
2. you may experience massive battery drain for the first couple of days due to the spotlite re-indexing itself. if you can, leave your charger connected while your MBP completes this process.

that's fine. you can do as you wish. it's you that needs your mac. but it's been recommended here many times that you use a wired ethernet connection, if possible, to download the OS upgrades. if you can't, you should at least make sure the mac is as close to the router as you can get it. as far as the battery drain issue, there's a lot of things your mac will need to do after the installation. that's not going to change if you decide to wait. and finally, there's no rush. the upgrade will still be waiting for you if you do decide to wait. it's not as if it's a limited time offer. :)

you're welcome. have fun. :)