I am not sure what "best" really is in this situation, but you need to be able to draw from it quickly, hide it under a concealment garment, and have it conform to all the IDPA holster regulations. I think that there are lots of holsters that will do that quite nicely. I have several that fit the bill for a 1911 but generally just use an old leather Safariland thumb break holster from the mid 1970's from which I removed the thumb break feature. I do not like the idea of having to unsnap a strap or push a button when I want to draw quickly.