best Mac OS version for 2012 21" iMac (booting from external SSD, 8 gb ram)

[Sarcany]

clay wrote:
[quote=Sarcany]
Sierra loses support in September.

HS isn't exactly a joy, but it's tolerable and has another year.

I take it by your answer that Mojave should be avoided on a machine of this vintage/specs? I think the user will be just fine with 10.13.
Mojave should be avoided.

Period.

.