How do you declare string constants in C?

I know it's quite idiomatic, or good style at least, in C to declare numeric constants as enums instead of #defineing them.

/* bad style */
#define MAXLINE 1024

/* good/better style */
enum {
    MAX_LINE = 1024
};

Is there an equivalent rule for the definition of string constants?

/* is this good style? */
#define HELLO "Hello World"

/* or is this better? */
const char *HELLO2 = "Howdy";

What do you prefer? If possible show some drawbacks of either method.