Brian D. wrote:It does depend on individual build and just how far back you carry. I also feel that a butt-forward cant hides the gun just a little better.
^ This is really the long and short of it.
Try this, Carmen:
Make a "finger gun" and put it at your waistline. Pretend like you're grabbing a gun out of your holster, there, at whatever clocking around your waist that happens to be. Do this as naturally as possible, without any preconceived notions as to what you might want out of a holster/holster setup. Instead, let your body do the talking.
Now, trace this forward and back along your belt line, first from the 3 to the 12, and then from 3 towards the 6 (both assuming you're right-handed - if you're a lefty, mirror the clocking; both assume that you're drawing strong-side, though).
Pay attention to the angle your wrist makes as you trace these clock locations. That's pretty much how much "cant" you'll likely want at any of those locations.
Like
Brian D. noted above, typically, shooters tend to the more severity of the cant the further towards the 6 they push the gun. Between the 12 and the 3 (on a right-handed shooter), the tendency is instead for a "zero-cant" or "straight-drop" setup.
But this is also highly variable in terms of personal preference, as based on just how your body is shaped/sized, and how your joints articulate - including injury/disease considerations.
Javelin Man's post above is a great example, and Dave Spaulding, famously, is another (although his is a slightly "reversed" cant).
Finally, as Brian points out, the cant can also interact with concealment. Larger guns tend to conceal better with a bit more cant, but at the same time, if you get too extreme, the muzzle can jut out "behind," and that can also ruin one's concealment profile just as badly.
Furthermore, it's also possible to play with the ride-height of the gun above the beltline by playing with the cant: a lower ride-height can be achieved with a more aggressive cant being used to allow for clearance of the grip away from the beltline, to insure a good, dominant grip coming out of the holster in a fight.
There's really no right or wrong - play with it, put yourself on a timer, do some combatives (even if it is just mock play with no real physical force, that's OK, too). The bigger things to look out for would be whether you're sweeping the muzzle across yourself or those surrounding you, as well as whether you have any special considerations when (re)holstering your gun, due to how you position the holster and the cover garment(s) you may be wearing (i.e. is your new setup close to a cinch-pull on your winter parka?).