Depends on when you'll be using it, what activities, etc. I have several for different situations. My favorite for heavy-duty use is the Blackhawk. Take a look at their web site, their products are great quality. But it's a little large for jogging or outdoor light activity. For that I like the Coronado leather packs. I actually keep my Kimber Ultra Elite in the truck for mobile carry in the center console in a black leather Coronado. If you're going to be out in rainy weather or want a lighter-weight to jog, go with their nylon model. Get one with elastic holder for extra clip, and don't scrimp on the qualtiy. Hope you never have to, but the one time you may need it, make sure it performs for you. The gun and the holster are the tools that stand between you and max response. Hope this helps.
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"I love to do things that scare me, for without fear there is no courage..."