Properly initialising variables in modern C++ (C++11 and above), using () or {}?

Question

The C++ reference pages say that () is for value initialisation, {} is for value and aggregate and list initialisation. So, if I just want value initialisation, which one do

Answer 1

Herb Sutter seems to be making an argument in CppCon 2014 (39:25 into the talk) for using auto and brace initializers, like so:

auto x = MyType { initializers };

whenever you want to coerce the type, for left-to-right consistency in definitions:

• Type-deduced: auto x = getSomething()
• Type-coerced: auto x = MyType { blah }
• User-defined literals auto x = "Hello, world."s
• Function declaration: auto f { some; commands; } -> MyType
• Named Lambda: using auto f = [=]( { some; commands; } -> MyType
• C++11-style typedef: using AnotherType = SomeTemplate