It's popular to advocate for client-only SEP-C over Norton right now.
I actually run both. I get a couple of SEP licenses comped through my employer.
If I were to choose one or the other, I'd choose Norton.
The protection technologies are virtually identical. Norton is cloud-dependent also.
SEP does, in fact, have more granularity in the way you can adjust certain things...
Now to dispell with the rumors... low probability events...
-No, there is no toolbar in for Norton in Chrome. At one time there was, but the Norton toolbar is no more.. I'm not sure about Edge, Firefox...
-You can easily switch off/on Safe Web, Norton Home Page, Norton Password Manager.. and there are more things you can switch on.
-Having run between 4-8 copies in my household for several years, I can say that in my experience, Norton is among the smoothest AVs I've run... And I've run Kaspersky, Emsisoft, G-DATA, McAfee, Bitdefender, Panda, Avira... and a few others..
And... there are advantages to Norton Premium over SEP-C
-Using the sale price from above compared with SEP-C, Norton costs much less (percentage wise)
-Norton's 25GB cloud storage
-Norton's auto backup, family features, camera protection, online management portal
But, at the end of the day... you should run what makes you happy