@wayfarer
As a personal note for you, the following.
In essence, a clean and objective comparison of Plesk and cPanel could result in a summary of many details, advantages and disadvantages, all of them not really relevant.
All panels are intended to make work with and on a server more easy, but that is a paradox to some extent: just use a ssh terminal and CLI tools, that is most efficient/performant.
The discussion about Plesk and cPanel is very similar to the comparison of Perl and Python.
Perl is a very fast, clean, efficient and performant code, but very messy to program and rather useless in specific scenario´s.
Python is the same and much, much more, with a penalty on performance.
Python is just the favourite of the public and has been the favourite for a long time, even leading to (almost) the extinction of Perl.
There is no winner here, when comparing the two: it is just all about the perception of the public, in this case in favour of Python.
Nevertheless, for every day use, Python should be preferred.
In short, in the context of panels, Plesk is the Python equivalent: always handy, quite flexible, fast and efficient enough and so on.
And cPanel, is that the Perl equivalent? No, far from that: cPanel only resembles Perl in terms of "messy" (cPanel even contains some ancient lines of code that enable cPanel to kill itself and/or to kill specific functions in specific circumstances, a vulnerability that is heavily used by hackers, spammers and such).
I am pretty sure that you, if you would make the effort to run pre-defined workloads and setups on both panels, would objectively conclude that Plesk is outperforming cPanel.
You can do the tests OR just take our words for granted and assume that we are giving you good advice by saying: prefer and use Plesk!
However, you are free to doubt our statements and replace our statements by the nasty comments on Plesk, posted online by avid cPanel users.
You should ask yourself whether it makes any sense to apply the negative bias of cPanel users to your decisions regarding Plesk.
In my humble opinion, it does not make any sense and I would strongly advice you to disregard half of the internet, when it concerns hosting matters.
Life really becomes more easy, when miscommunication and misinformation are absent.
Regards.....