Hey guys, for the past few weeks I've been trying out various handguns, out of everything, the .45 acp was my favorite caliber by far. Of the 1911's, I narrowed it down to the sig and Springfield Of the doublestacks, the XD45 4" and the Glock 21 were my two favorites. I decided I like the doublestacks more, they felt much more comfortable, as I have big hands and I felt more secure with the extra grip surface area. I plan to conceal carry with IWB holsters. I know many will say it's a challenge to conceal these size guns, but I've tried both using the crossbreed supertuck and the desantis prostealth and I found them to be very comfortable. My range let me wear each, one while using the other on the range. I've sat, bent, repeatedly walked up and downstairs, etc and neither felt uncomfortable or bulky. I'm stuck between the XD .45 4", the Glock 21, or the XDm .45 if the price difference is worth it from the XD 4". I tried finding things I don't like, but I love both. I like the extra features and safety on the XD, but I really like the aggressive grip of the Glock also. Any opinions would be greatly appreciated.