In this game, fractions of an inch can be all the difference. Sadly, it takes a healthy budget and quite a bit of commitment to be able to search for that "just right" compromise for your unique body, dress style, and the chosen firearm/holster combo - there are people who do that, but in most cases, we're continually "evolving" our carry equipment.
If you have friends who carry and/or join a local concealed-carry club/Forum community, you may be able to "try on" some different firearms and setups.
I also wanted to keep with the 9x19 as my carry - my "pocket carry" is a Kahr PM9, and yes, it's a whole world's difference from my XDm9 3.8 Compact, which is my true-EDC (usually in a Pure Kustom Black Ops Pro, but occasionally in a CBST or MTAC - typically when I need a bit "flatter" concealment: not a fault of the Pure Kustom, rather, where and how I carry, the CBST/MTAC can sit a bit "flatter"), but it also doesn't handle like the larger pistols. When/if you step down to the sub-guns, that'll become even more apparent.
Comp Tac vs Crossbreed Supertuck ..... which one is better ?
^ Like I said there, which one of those two works better for me simply depends on the pants I'm wearing. It doesn't take long at all to slip them on/off, so if I find that one's bulging a bit strangely, I just get the other one, and see if that doesn't make it better. After a couple of weeks, I cycled through all of my different makes/models of pants, and had it pretty much figured out.
Overall, the problem is that to a certain extent, you're either going to have to modify your dress around what and how you carry, or you're going to have to modify how/what you carry around your dress.