I would pick Rust if I had the choice and libraries were available. Personally, I've found that the borrow checker for the most part doesn't get in the way. Bu

I would pick Rust if I had the choice and libraries were available. Personally, I've found that the borrow checker for the most part doesn't get in the way. But part of the reason for that is because I've used Rust enough to know what the borrow checker expects, so I would just design things in a way that get accepted in the first place without having to think about it. Someone new to the language won't have that prior knowledge, and will be more likely to run into the borrow checker and get frustrated because of it. So with that in mind, I don't really find the cognitive overhead to be high when writing Rust. I also find that I like having the control over what can mutate what, and knowing that information by looking at the function signatures or variable definition. Also, Rust has all of the features I liked in Haskell when I tried it, while putting them into a package that is more familiar and comfortable to me.