Internet stories of SIG - which I don't discount at all - concern me far more than Glock. My actual experience, however, says otherwise.
I've had a pair of IOP P320s which worked flawlessly. I'm relatively low on my round count on my P365XLs, but so far no malfunctions. I've had five Glocks, a Gen 3 G19, a Gen 4 G17, two G42s, and a G43X that gave me fits, some more regularly than others.
Maybe I'm just lucky, I don't know. But, for something truly innovative - which I consider the P365 series to be - I'm willing to give SIG a chance, with the caveat that I need two guns, and once the carry gun is vetted all the mileage is going on the practice gun.