I was wondering what is a good or the best that you think conceal .40 cal to carry
Look in the mirror, that's the only place you will get the right answer.
How did you decide on a .40 cal? I ask, because if you can't decide on the platform, what made you decide on the caliber all ready?
Why not find what platform you want, then shooting whatever caliber they have available for that handgun, and choosing the largest caliber you can shoot effectively. That may be only the 9mm, or possibly the .45...
In just a few minutes, a Glock fanboy will come by and post a link to a test where a Glock was put in a blender filled with Drano, sulfuric acid, Coca-Cola, piranha, and 2 pounds of industrial diamonds. A CAT D8 bulldozer was then dropped on it from 1000 feet. The owner picked up the Glock, chambered a 155mm HE round, hit a post-it note at 917 miles, and then proceeded to run 726,761 rounds of Wolf ammo coated with Gorilla Glue with no failures.
--------------------------------------------------------------------------------
In just a few minutes, a Glock fanboy will come by and post a link to a test where a Glock was put in a blender filled with Drano, sulfuric acid, Coca-Cola, piranha, and 2 pounds of industrial diamonds. A CAT D8 bulldozer was then dropped on it from 1000 feet. The owner picked up the Glock, chambered a 155mm HE round, hit a post-it note at 917 miles, and then proceeded to run 726,761 rounds of Wolf ammo coated with Gorilla Glue with no failures.
--------------------------------------------------------------------------------