I've also heard some good things on the S&W M&P .40...
I personally like the feel/trigger of the Glocks, and the feel/trigger of the 1911's.
As someone said above, the 1911 is the M16 of the pistol world, needs more maintenance to keep running well, (but if all is considered, it runs VERY well), and the Glock is more compared to the AK47, runs through almost any condition with little maintenance. But you loose the accuracy of the 1911's.
With the glocks and the polymers, you're also gonna get a higher cap. mag. too.
But if you're in a firefight where you need more than a couple of 7rnd mags, you're probably somewhere where you shouldn't be...
(As a side note, this is quoted from a police buddy of mine from the gunstore. I don't have any experience with either yet. Only ones I've shot are Ruger P90 which I thought was ****e, and a Ruger .40, which was comperable to the first).
Good luck with whatever you choose. Are you getting your CCW permit or something????