the bersa is one of the best valued guns on the market. it is one of only 3 guns under $400 i would trust with my life.
the sig is nice if you have tiny hands. it sits very low in your grip, and the slide will cut up your hand very bad if you have big or meaty hands. i recommend trying before buying.
another sig 380 i like is the p238. it's on the pricey side, but very nice.
the cz 82/83 is a very nice 380, but way too heavy for ccw IMO.
Favorite range gun for the money - CZ 75B or STI Spartan V 9mm
Go-to carry setup - Walther PPS or PPQ in FIST kydex holster 1AK
Favorite semi-auto design - HK P7
"A Sig is like a lightsaber - not as clumsy or random as a Glock."