It depends on what you like. It also depends if the cat likes your or not. Getting a cat that doesn't like you is not a very good idea, and most cats won't "warm up" to someone they don't like like a dog would.
There's no such thing as a better type of cat! It's the cat's personality that stands out, not their breed. But I personally like the look of russian blue more. They look soft and cute, something to cuddle.