Interesting topic. I don't own either. Rented a Glock years ago at shooting range. Loved the trigger but really had nothing to compare it to. A well to do good friend has Sig. I have never fired it. It sounds like for the money, Glock wins the Debate.
I prefer Sigs but am also pretty fond of Glocks. At one time or another I've owned the G42, G19, G23, G30, G29, and the G21 and of the Sigs I've had the 225, 226, 229, and 220. I think Glock makes a more utilitarian pistol, something that can get beaten up and worn and I dont feel bad about it, but I never really developed an attachment with any of the Glocks, they just kind of blended together.