I vote for Glock 17.
While many swear by their Springfield X ?, there have been stories about extractor failures, rust0matic, etc.
I'm sure these problems are fixable and probably HAVE been fixed. But I held a Springfield at a gun show, and it felt definitely cheesy, compared to the proven Glock.
Also, the bore axis on the Springfield is higher than on the Glock, I have always liked a lower bore axis. Just personal preference. Your choice is between the proven, and the yet tol be proven, IMHO.
The Glock's Tennifer finish has decades of performance behind it.