I have a single-stack Mauser HSc .380. I've had it for years, but only shot it once in awhile. It seems to work fine.
I originally bought it based on a cover story in a Guns & Ammo from back in the late 60's or early 70's. I bought the magazine at a flea market for about $.05 and couldn't get over how cool the HSc looked to my teenage eye. A few years later I saw one in a pawn shop and had to have it. I still think they are nice looking pistols.
Anyway, to the point, I saw one of those high-capacity double-stack HScs awhile back in a gun shop. I think it was called a "Super HSc" or something. It was pretty ugly. The grip was just way too big for the rest of the gun. And, while I like the HSc, even the standard model is heavy. I'd steer clear of the high-capacity version. If you want a double-stack .380, the Barettas and Brownings look a lot nicer. And today, you can get a Kel-tec, Taurus, or Kahr 9mm or .40 that is smaller, lighter, and fires a more effective cartridge. Or a Makarov or FEG PA-63 for less money that fires a slightly more powerful round.
That said, the double-stack HSc probably works fine if you don't mind the size, weight, and look.
Doug