I find the whole caliber debate a waste of time. Fine you can argue that your special Buffalo Bore exploding bullet is better than XYZ but if it misses its mark it isn't worth squat. Far too much debate has going under the bridge on a subject that is relatively inconsequential. Why don't we hear people argue shot placement? How many keyboard commandos can actually put their magic bullets were they will be effective?
Full disclosure: I carry a Lightweight Commander in 45 ACP. I also live under a bullshit set of rules where I can't have more than 10 rounds in a magazine. Additionally the ridiculousness extends to how a "Large Capacity Magazine" (CT state law term) can be carried. I want to take away all worry of having the wrong magazine in the wrong place with the wrong amount of ammunition contained within. So I happily carry a 1911 with 8 +1 and don't feel I'm short changing myself by not having 10 +1 of 9 mm. Additionally I like the 1911.
If I lived in a free state I would probably carry my Gen 5 G17.