I've been a 1911 shooter for 35 years, and disliked Glocks nearly as long - until I shot a G30. Went right from the range rental to the sales counter and bought one. Could not be happier with it.
I'm a XXL guy, so concealing it is not a big issue. I chose a Gen3 standard frame, as it fits my hands well and I shoot it very well. The G4 isn't CA approved, and the rental I shot was identical to what I bought.
I also rented S&W M&P and XD Service and Tactical .45s, M&P 9, 9c, Glock 17 and 19, and a couple of XD 9mms. None suffered any failures (and were all dirty, well-used range rentals) and all were completely stock. The XD guns were OK, but the overly-aggressive checkering was a negative for extended range time. The M&Ps were the most comfortable to shoot (bought the wife a 9c) and I may still get a M&P .45 later on.
The G30 was a surprise in every way. The Glocks are the most foreign of the group to a 1911 shooter, but I shot the G30 better than any other gun I'd rented. It's an easy gun for me to shoot well, and the big grip tames the recoil very well. The accuracy is outstanding, IMHO.
The polymer single-stack .45 compacts are attractive, but didn't bring enough to the table to move me away from a 1911. Size and weight reductions also reduce shootability, and I didn't have a problem carrying a full-size 1911. The G30 is actually thicker than a 1911, but not enough to matter to me. It does weigh less, is as reliable as a sunrise, and holds 3 more rounds.
I prefer a CCW that I will shoot often. The G30 fits the bill for me. It won't for everyone. The smaller the gun, the more critical the fit to the shooter. If at all possible, shoot the ones you think are candidates.
You will find proponents of every make and model. All the guns mentioned in this post are quality guns, as are others mentioned elsewhere in this thread. It's like trying to buy running shoes based on what others wear. You need to see what fits you best.