I have a Rami 2075 in 9mm with DA/SA cocked and locked capability, a Sigma 9ve and the Bersa Thunder 380. Sorry no Sig.
or Kahr P9.
I thought the Bersa had a lot of recoil for a 380. It is a go bang everytime gun, just don't run weak ammo thru it like I did. It doesn't cycle well with weak ammo. Any factory ammo should be fine, I was shooting some weak reloads. Very concealable, feels good in the hand and very accurate. In single action the trigger pull weight is very light. This is one of those cases where low price has nothing to do with quality. If you like 380 it's a fine gun.
The Sigma 9ve is another very reliable shooter. Grip feel very comfortable. Recoil is light. It has a longish trigger reset after the round is fired. The long trigger reset is a challenge for rapid fire but like anything else can be mastered with lots of practice. Little bit like a revolver trigger. Of course it's Double Action Only. The gun's rounded edges work well for concealed carry. Feels lighter and smaller on the body than it actually is. I'm sure it's the trigger, but I'm not very accurate with the Sigma unless I really try.
The Rami feels chunky in the hand. It's all metal and is a little heavy considering it's size. I am very accurate with the Rami possibly because of it's single action trigger pull. The trigger on my particular gun is just sweet. Great feel and great pull weight. Also short trigger reset. I think the bbl is only 3.5" but I can hit a pop bottle pretty regularly at 20'. Pretty remarkable for a sub compact. Recoil is low due to weight of gun. When I first got the Rami I was having some failures to feed/eject. The problem seems to have gone away however. The last 200-300 rounds, both FMJ and JHP have been flawless.