Home defense pistol advice

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I currently have a Sig P229 DAO in .40 S&W in a holster attached to the armor that sits by my bed. It's intended as a backup to an AR15 for home defense purposes. The only other handguns with night sights that I own are a pair of Colt 1911s. Either of the 1911s has a superior trigger to the Sig but I'd be giving up four rounds of magazine capacity were I to make the switch. I can shoot the Sig effectively despite the DAO trigger but this would apply more so with the 1911 trigger. I have four magazines for the Sig either in the gun or on the armor and would likewise have four to six for the 1911. I have fourteen magazines for the AR either in the gun or on the armor, so the pistol is truly a backup weapon.

Is there an obvious choice of pistol here between the .40 Sig and the .45 1911? A third option is to get a trigger kit for the Sig. Or am I just as crazy as typing all of this out makes me look?