There’s nothing wrong with a .357
I’d be happy to have one if the SHTF, with a few speedloaders.
Yeah, they’re not bad. But I’d take a G21 and a couple of spare mags any day. Maybe a couple of the Korean hi-cap ones for that gun, they work well in my experience. Even with the stock ones, you’re getting 2X the capacity per reload compared to a revolver.