I have had all 3 yes even the damn MP. There I admitted it, that being said it was also the fastest I've ever got rid of a gun too. Have the XDSC as well. Had it in 40 sold it and got the 9 to make all my handguns be 9mm. I replaced the XD as soon as I sold it and never once thought about replacing the MP. I still like my Glocks way better, ill still carry the XD on occasion but its rare. Spend some time behind a Glock and chances are you'll come to love it. I don't mean 1 or 2 mags. Spend a whole day at the range with it and I think you'll find you shoot way better with it. Besides that there are more options, accessories, parts ect available for Glock than any other and available at more places. On top of that there are numerous rifles and carbines set up to take Glock mags so no need to manage several different mags.