How to "if statement"

After my question about camelCase vs underscore_names, I had another thought:
What (scientifically), is better:

if (//condition) {
    //stuff
};

-OR-

if (//condition)
{
    //stuff
};

Which is faster to type? Which is faster to read? Which makes the smaller file size? Which one - when weighing out all the scientific variables - is "better" by fact, not opinion?