Hello sir! Welcome to the world of handguns.
I currently own both a Sig P6 and Glock 17. I have owned other Glocks and Sigs in the past as well.
Keep in mind that accuracy has more to do with how
you shoot than how the gun shoots.
I shoot equaly well with either platform, but they are very different. The DA/SA action of the standard Sig takes more getting used to than the DAO of the Glock, but neither one is bad in that regard.
As for reliability concerns, I've never had any failures in any of the Glocks, or any of the Sig that i have owned that were not clearly ammunition malfunctions, so it is my opinion that the reliability is virtualy the same for both platforms.
I can make most Sigs fail just by getting them dirty
Yes I'm sure you can.
Any hammer fired weapon can be dissabled when debris blocks the firing pin. This happens frequently when they are dropped in mud or loose sand. It only takes a second to clear, but most poeple don't think to look. Its a weakness thats inherant to the design. On the other hand, Glocks are
notoriously vulnerable to limp wristing: especialy the larger caliber variations; its a flaw inherant to their design as well.
From a mechanical standpoint, the service life of both pistols is probably very similar as well.
In the end, you need to descide which platform is more agreeable to
you, and make note of which platform shoots better for
you. With this in mind, i would advise you to get more trigger time with both platforms, and factor that into your descision far more heavily than the preference of internet forumites.