I have M1 Mac mini 16gb ..was planning to sell it off but it does everything so smoothly for ( mostly video editing) . I don't even feel a need to upgrade.Get a m1 Mac mini with 16 gb ram or get the cheapest Mac with 16gb/516 gb. Any 27 inch 1440 monitor works well with mac mini. Apple has designed everything to lure people in with a reasonable price in various segments. And then confuse tf out of us into milking more paise. Any 16gb/516 m series setup will be enough for literally everyone.
I have done 4k videos with quite a few transitions and layers and when exporting them. All done in few mins.
It actually feels great working on them.