My carries are a g19 and a sig p229 SAS e2. I favor the sig. I shoot them both very often and am comfortable with both. Honestly. As long as you train with it, understand it, can address any blockage or malfunction effectively and efficiently any thing will work. Slingshot or a 50 ae wouldn't matter. Now concealing would be a different issue. Find a good holster that is sturdy. I like my bravo concealment dos it both guns. I do t print and can dress as I please.
Ultimately up to you, your level of automatic response training, and what you are comfy with.
Hell. I'd be more comfy walking around with an a2 than just a pistol. But that's me