Of course, they are still trying to nag me into updating it by popping up a notice very few days that has no close option, only "Install" and "Details" which opens the App Store. >:(
I somehow manage to escape most of the weird software issues that seem to be commonly reported elsewhere, though. Not sure how that is.
Unplug all devices/monitors and then upgrade
I'm actually considering going back to 10.12 for a while. All of my 10.12 machines are stable. 2 of my 10.13 machines seem to always have some quirkiness.
Finder bugs have been persisting since Yosemite, with a very common one where drag & drop stops working until Finder is force restarted. APFS conversion went well and problem free. Even homebrew survived (mostly).
Strange USB problems persist, but they seem to be hardware related and ever present on this generation machine (first one with USB 3).
(1) The battery lasts slightly shorter (< 10%) than before. (2) Tapping no longer works on trackpad during login (but it works after you've logged in). You must physically click the trackpad if you want to click anything. (3) CPU load is high (> 50%) when the Applications folder is kept open in Finder, but I'm not sure if this is specific to High Sierra or not.
I'm waiting until 10.13.4 to update myself.
I updated my work macbook and it worked fine. Can't explain that.
That said, I don't really see any material improvements, so...
Not sure if you mean to update from old OSX to High Sierra or to keep up-to-date High Sierra itself