For a couple weeks I have been thinking about my next purchase. The three I have narrowed down is the Berretta PX-4, Sig Sauer P229, or Springfield XD. I want a full size or close to it, but I have not decided on which caliber to get. If I'm not mistaken all three offer interchangeable barrels, and your first purchase must be anything but a 9mm. However your choice for get your barrel can be a 9mm. I know there are pros and cons with all three, but I would like to get your opinion on which one you would choose and why. I am not considering this to be my CCW but it would be my HD along with my Mossberg 500. Your help is always appreciated and considered!