I can say myself that I have went back and forth between Mac OS updates for MacBook Pro mid 2012;6 gb ram stockish...that Mojave is running 👌🏻 however I feel that it takes up more resources memory then the high Sierra.  now noticing differences would be that iCloud bookmarks wouldn’t sync and imessage issues not…

Font anti-aliasing is changed in Mojave for all users. You’ll notice the difference and it’ll be OK in most apps. If you’re non-retina and use either Atom or Visual Studio Code though, you’ll see some *terrible* font rendering.

Using Mojave on iMac, late 2012.  Haven’t had any issues. Runs smoothly and haven’t noticed any difference in performance. It’s been good for me so far, and I like the changes and updates so far.