You're comparing apples to pears. The Sig 365 is closer to the Glock 43. The Sig P320 subcompact is roughly the same size as a Glock 26. Which would I prefer? Probably the Sig's assuming they both had had their respective, well known problems repaired or were new enough versions not to have them. Which is better? None of them. They're all good handguns.Which pistol combo would you prefer and believe is better?
So do the comparable Sigs. A P320 and P320 subcompact can use the same magazines. The OP should be using a Glock 17 and 43 as his "combo" if he wants to compare similar guns.I like that the Glocks use a common magazine and are virtually the same gun other than size.
I'll take a Glock 19 and 43.