the 3 .380 double stacks that come to mind are the Beretta Cheetah, Bersa Thunder .380 Plus, and the hard to find ATI MS380 which is literally a Cheetah clone made in Turkey with 2 more rounds in the magazine.
IMHO, the best .380's ever made are the 80 Series Berettas and the made by Beretta Browning BDA380. I've had 3 84's and two BDAs over the years and only sold them due to needing cash. None of them has ever had a misfire that wasn't due to bad ammo. As a bonus, they look great too!